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The answer is, No. They dont, they don't have to saidsay "The World" whenever they want to stop time.

TheYou can find the reason why they said "The world"World" to stop time is you can find on this question.

: What is the purpose of characters shouting out the name of their attack?

From the answer section, it's stated that,

It's a tradition where it was intended for young audiences to yell the attack names with the character. The tradition began with Mazinger Z, which is considered the first Super Robot anime. The producers of the show felt that if the main character, Kouji Kabuto, shouted out the attack names each time the mecha did them, then it would give the target viewers, who were aged around 3 to 10 at the time, the ability to literally join along in the fun.

The logic behind this is if the kids were to directly interact with a show they already liked, then they'd like it even more and would stick with the show in the long run. Needless to say, the strategy worked, and literally all other mecha anime in the 70's (sans First Gundam in late, late '79) copied the trend.

Thus, the tradition was born and still anime shows, regardless of whether they are mecha themed or not, use it, regardless of their target audience.

From the user's answer, it's stated

Also, It seems that it was also done to make the shows feel more intense. Something about the characters yelling their attacks just makes the action better.

From what you said

when Dio attempts to stop time but fails since Jotaro managaesmanages to get his heart working again quick enough.

The reason jojowhy JoJo could reached dio'sreach Dio's head eventhough dioeven though Dio had verbally said 'The World'"The World" to stop the time because, jojois that JoJo had a new ability to stop time at that time  , but not that much, just about milisecondsmilliseconds. To proofprove that, these are some clip were Jojoclips where JoJo tried to move when dioDio stop the time.

  1. 0:10
  2. 2:22

Here are some exampleexamples to proofprove that Dio/Jotaro didn't have to saidsay "The World" to stop time

JojoJoJo's Bizarre Adventure  : Stardust CrussaderCrusaders

  1. When Polnareff attack dioDio with Silver ChariottChariot at 0:58
  2. When polnareffPolnareff meet Dio for the first time at 1:39
  3. When Hol Horse tried to kill Dio at 3:44
  4. When they tried to open Dio's COffincoffin at 0:21
  5. Chase scene where dioDio try to beat up Joseph 0:22
  6. Scene 1 0:23
  7. Scene 2 0:51

JojoJoJo's Bizarre Adventure  :Diamond Diamond Is Unbreakable

  1. Jotaro vs Jousuke 4:17
  2. Jotaro vs Rat 1 2:35
  3. Jotaro vs Rat 2 3:25

The answer is, No. They dont have to said "The World" whenever they want to stop time.

The reason why they said "The world" to stop time is you can find on this question.

What is the purpose of characters shouting out the name of their attack?

From the answer section stated that,

It's a tradition where it was intended for young audiences to yell the attack names with the character. The tradition began with Mazinger Z, which is considered the first Super Robot anime. The producers of the show felt that if the main character, Kouji Kabuto, shouted out the attack names each time the mecha did them, then it would give the target viewers, who were aged around 3 to 10 at the time, the ability to literally join along in the fun.

The logic behind this is if the kids were to directly interact with a show they already liked, then they'd like it even more and would stick with the show in the long run. Needless to say, the strategy worked, and literally all other mecha anime in the 70's (sans First Gundam in late, late '79) copied the trend.

Thus, the tradition was born and still anime shows, regardless of whether they are mecha themed or not, use it, regardless of their target audience.

From the user's answer stated

Also, It seems that it was also done to make the shows feel more intense. Something about the characters yelling their attacks just makes the action better.

From what you said

when Dio attempts to stop time but fails since Jotaro managaes to get his heart working again quick enough.

The reason jojo could reached dio's head eventhough dio had verbally said 'The World' to stop the time because, jojo had new ability to stop time at that time  , but not that much, just about miliseconds. To proof that, these are some clip were Jojo tried to move when dio stop the time.

  1. 0:10
  2. 2:22

Here are some example to proof that Dio/Jotaro didn't have to said "The World" to stop time

Jojo Bizarre Adventure  : Stardust Crussader

  1. When Polnareff attack dio with Silver Chariott at 0:58
  2. When polnareff meet Dio for the first time at 1:39
  3. When Hol Horse tried to kill Dio at 3:44
  4. When they tried to open Dio's COffin at 0:21
  5. Chase scene where dio try to beat up Joseph 0:22
  6. Scene 1 0:23
  7. Scene 2 0:51

Jojo Bizarre Adventure  :Diamond Is Unbreakable

  1. Jotaro vs Jousuke 4:17
  2. Jotaro vs Rat 1 2:35
  3. Jotaro vs Rat 2 3:25

No, they don't have to say "The World" whenever they want to stop time.

You can find the reason why they said "The World" to stop time on this question: What is the purpose of characters shouting out the name of their attack?

From the answer section, it's stated that,

It's a tradition where it was intended for young audiences to yell the attack names with the character. The tradition began with Mazinger Z, which is considered the first Super Robot anime. The producers of the show felt that if the main character, Kouji Kabuto, shouted out the attack names each time the mecha did them, then it would give the target viewers, who were aged around 3 to 10 at the time, the ability to literally join along in the fun.

The logic behind this is if the kids were to directly interact with a show they already liked, then they'd like it even more and would stick with the show in the long run. Needless to say, the strategy worked, and literally all other mecha anime in the 70's (sans First Gundam in late, late '79) copied the trend.

Thus, the tradition was born and still anime shows, regardless of whether they are mecha themed or not, use it, regardless of their target audience.

From the user's answer, it's stated

Also, It seems that it was also done to make the shows feel more intense. Something about the characters yelling their attacks just makes the action better.

From what you said

when Dio attempts to stop time but fails since Jotaro manages to get his heart working again quick enough.

The reason why JoJo could reach Dio's head even though Dio had verbally said "The World" to stop the time is that JoJo had a new ability to stop time at that time, but not that much, just about milliseconds. To prove that, these are some clips where JoJo tried to move when Dio stop the time.

  1. 0:10
  2. 2:22

Here are some examples to prove that Dio/Jotaro didn't have to say "The World" to stop time

JoJo's Bizarre Adventure: Stardust Crusaders

  1. When Polnareff attack Dio with Silver Chariot at 0:58
  2. When Polnareff meet Dio for the first time at 1:39
  3. When Hol Horse tried to kill Dio at 3:44
  4. When they tried to open Dio's coffin at 0:21
  5. Chase scene where Dio try to beat up Joseph 0:22
  6. Scene 1 0:23
  7. Scene 2 0:51

JoJo's Bizarre Adventure: Diamond Is Unbreakable

  1. Jotaro vs Jousuke 4:17
  2. Jotaro vs Rat 1 2:35
  3. Jotaro vs Rat 2 3:25
2 added 1 character in body
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The answer is, No. They dont have to said "The World" whenever they want to stop time.

The reason why they said "The world" to stop time is you can find on this question.

What is the purpose of characters shouting out the name of their attack?

From the answer section stated that,

It's a tradition where it was intended for young audiences to yell the attack names with the character. The tradition began with Mazinger Z, which is considered the first Super Robot anime. The producers of the show felt that if the main character, Kouji Kabuto, shouted out the attack names each time the mecha did them, then it would give the target viewers, who were aged around 3 to 10 at the time, the ability to literally join along in the fun.

The logic behind this is if the kids were to directly interact with a show they already liked, then they'd like it even more and would stick with the show in the long run. Needless to say, the strategy worked, and literally all other mecha anime in the 70's (sans First Gundam in late, late '79) copied the trend.

Thus, the tradition was born and still anime shows, regardless of whether they are mecha themed or not, use it, regardless of their target audience.

From the user's answer stated

Also, It seems that it was also done to make the shows feel more intense. Something about the characters yelling their attacks just makes the action better.

From what you said

when Dio attempts to stop time but fails since Jotaro managaes to get his heart working again quick enough.

The reason jojo could reached dio's head eventhough dio had verbally said 'The World' to stop the time because, jojo had new ability to stop time at that time , but not that much, just about miliseconds. To proof that, these are some clip were Jojo tried to move when dio stop the time.

  1. 0:10
  2. 2:22

Here isare some example to proof that Dio/Jotaro didn't have to said "The World" to stop time

Jojo Bizarre Adventure : Stardust Crussader

  1. When Polnareff attack dio with Silver Chariott at 0:58
  2. When polnareff meet Dio for the first time at 1:39
  3. When Hol Horse tried to kill Dio at 3:44
  4. When they tried to open Dio's COffin at 0:21
  5. Chase scene where dio try to beat up Joseph 0:22
  6. Scene 1 0:23
  7. Scene 2 0:51

Jojo Bizarre Adventure :Diamond Is Unbreakable

  1. Jotaro vs Jousuke 4:17
  2. Jotaro vs Rat 1 2:35
  3. Jotaro vs Rat 2 3:25

The answer is, No. They dont have to said "The World" whenever they want to stop time.

The reason why they said "The world" to stop time is you can find on this question.

What is the purpose of characters shouting out the name of their attack?

From the answer section stated that,

It's a tradition where it was intended for young audiences to yell the attack names with the character. The tradition began with Mazinger Z, which is considered the first Super Robot anime. The producers of the show felt that if the main character, Kouji Kabuto, shouted out the attack names each time the mecha did them, then it would give the target viewers, who were aged around 3 to 10 at the time, the ability to literally join along in the fun.

The logic behind this is if the kids were to directly interact with a show they already liked, then they'd like it even more and would stick with the show in the long run. Needless to say, the strategy worked, and literally all other mecha anime in the 70's (sans First Gundam in late, late '79) copied the trend.

Thus, the tradition was born and still anime shows, regardless of whether they are mecha themed or not, use it, regardless of their target audience.

From the user's answer stated

Also, It seems that it was also done to make the shows feel more intense. Something about the characters yelling their attacks just makes the action better.

From what you said

when Dio attempts to stop time but fails since Jotaro managaes to get his heart working again quick enough.

The reason jojo could reached dio's head eventhough dio had verbally said 'The World' to stop the time because, jojo had new ability to stop time at that time , but not that much, just about miliseconds. To proof that, these are some clip were Jojo tried to move when dio stop the time.

  1. 0:10
  2. 2:22

Here is some example to proof that Dio/Jotaro didn't have to said "The World" to stop time

Jojo Bizarre Adventure : Stardust Crussader

  1. When Polnareff attack dio with Silver Chariott at 0:58
  2. When polnareff meet Dio for the first time at 1:39
  3. When Hol Horse tried to kill Dio at 3:44
  4. When they tried to open Dio's COffin at 0:21
  5. Chase scene where dio try to beat up Joseph 0:22
  6. Scene 1 0:23
  7. Scene 2 0:51

Jojo Bizarre Adventure :Diamond Is Unbreakable

  1. Jotaro vs Jousuke 4:17
  2. Jotaro vs Rat 1 2:35
  3. Jotaro vs Rat 2 3:25

The answer is, No. They dont have to said "The World" whenever they want to stop time.

The reason why they said "The world" to stop time is you can find on this question.

What is the purpose of characters shouting out the name of their attack?

From the answer section stated that,

It's a tradition where it was intended for young audiences to yell the attack names with the character. The tradition began with Mazinger Z, which is considered the first Super Robot anime. The producers of the show felt that if the main character, Kouji Kabuto, shouted out the attack names each time the mecha did them, then it would give the target viewers, who were aged around 3 to 10 at the time, the ability to literally join along in the fun.

The logic behind this is if the kids were to directly interact with a show they already liked, then they'd like it even more and would stick with the show in the long run. Needless to say, the strategy worked, and literally all other mecha anime in the 70's (sans First Gundam in late, late '79) copied the trend.

Thus, the tradition was born and still anime shows, regardless of whether they are mecha themed or not, use it, regardless of their target audience.

From the user's answer stated

Also, It seems that it was also done to make the shows feel more intense. Something about the characters yelling their attacks just makes the action better.

From what you said

when Dio attempts to stop time but fails since Jotaro managaes to get his heart working again quick enough.

The reason jojo could reached dio's head eventhough dio had verbally said 'The World' to stop the time because, jojo had new ability to stop time at that time , but not that much, just about miliseconds. To proof that, these are some clip were Jojo tried to move when dio stop the time.

  1. 0:10
  2. 2:22

Here are some example to proof that Dio/Jotaro didn't have to said "The World" to stop time

Jojo Bizarre Adventure : Stardust Crussader

  1. When Polnareff attack dio with Silver Chariott at 0:58
  2. When polnareff meet Dio for the first time at 1:39
  3. When Hol Horse tried to kill Dio at 3:44
  4. When they tried to open Dio's COffin at 0:21
  5. Chase scene where dio try to beat up Joseph 0:22
  6. Scene 1 0:23
  7. Scene 2 0:51

Jojo Bizarre Adventure :Diamond Is Unbreakable

  1. Jotaro vs Jousuke 4:17
  2. Jotaro vs Rat 1 2:35
  3. Jotaro vs Rat 2 3:25
1
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The answer is, No. They dont have to said "The World" whenever they want to stop time.

The reason why they said "The world" to stop time is you can find on this question.

What is the purpose of characters shouting out the name of their attack?

From the answer section stated that,

It's a tradition where it was intended for young audiences to yell the attack names with the character. The tradition began with Mazinger Z, which is considered the first Super Robot anime. The producers of the show felt that if the main character, Kouji Kabuto, shouted out the attack names each time the mecha did them, then it would give the target viewers, who were aged around 3 to 10 at the time, the ability to literally join along in the fun.

The logic behind this is if the kids were to directly interact with a show they already liked, then they'd like it even more and would stick with the show in the long run. Needless to say, the strategy worked, and literally all other mecha anime in the 70's (sans First Gundam in late, late '79) copied the trend.

Thus, the tradition was born and still anime shows, regardless of whether they are mecha themed or not, use it, regardless of their target audience.

From the user's answer stated

Also, It seems that it was also done to make the shows feel more intense. Something about the characters yelling their attacks just makes the action better.

From what you said

when Dio attempts to stop time but fails since Jotaro managaes to get his heart working again quick enough.

The reason jojo could reached dio's head eventhough dio had verbally said 'The World' to stop the time because, jojo had new ability to stop time at that time , but not that much, just about miliseconds. To proof that, these are some clip were Jojo tried to move when dio stop the time.

  1. 0:10
  2. 2:22

Here is some example to proof that Dio/Jotaro didn't have to said "The World" to stop time

Jojo Bizarre Adventure : Stardust Crussader

  1. When Polnareff attack dio with Silver Chariott at 0:58
  2. When polnareff meet Dio for the first time at 1:39
  3. When Hol Horse tried to kill Dio at 3:44
  4. When they tried to open Dio's COffin at 0:21
  5. Chase scene where dio try to beat up Joseph 0:22
  6. Scene 1 0:23
  7. Scene 2 0:51

Jojo Bizarre Adventure :Diamond Is Unbreakable

  1. Jotaro vs Jousuke 4:17
  2. Jotaro vs Rat 1 2:35
  3. Jotaro vs Rat 2 3:25