I'm going to assume that you mean a giant robot that transforms into something else, usually a vehicle. If that's the case then you have two candidates depending on how further you want to specify them.
Brave Raideen was released in 1975 and it featured a giant robot that transformed into a bird shaped rocket ship.
Getter Robo was first released in 1974 ...
AniDB has a nice releation graph regarding the different Gundam shows and movies.
Universal Century and related timelines
If you are interested in the original story of the Universal Century (UC) timeline and are willing to invest a lot of time (about 74hrs), you can start off with Mobile Suit Gundam (1979-1980) show and work your way through the sequels ...
There are 6 different accepted universes within the Gundam Multiverse.
Each has its own characters unique to its timeline, and does not intersect with any other timelines (ex: In Gundam Wing, the events from Mobile Suit Gundam never happened).
They are listed as follows:
Universal Century Time line (Best place to start to get into it, every single Gundam ...
Haro was included in Mobile Suit Gundam for the purpose of showing Amuro's talent for building machines. However, it fulfills another purpose; that of being a mascot.
Kunio Okawara initially designed Haro for Invincible Steel Man Daitarn 3, and named him after HAL (the computer from 2001: A Space Odyssey)2. It was (likely) intended to be a ...
You could count Tetsujin 28-go, or Gigantor as it was known in the west.
This one was erected in Wakamatsu Park, Kobe, after the Great Hanshin Earthquake of 1995. The idea was to rejuvenate the area with tourism.
As far as I know, this is full-scale, at 18m (59ft) tall.
According to the wikia the suit had a built in suicide bomb but it was damaged by the salt water. I would guess that this is to prevent the pilots from being captured. This would be similar to fighter pilots during War time using cyanid pills to keep from being interrogated for delicate information.
Washing up on the beach, Heero's unconscious body was ...
Any question of "Why hasn't X happened?" tends to be tricky to answer, because there isn't really much information on it unless there were already plans to do something (it's like asking "Why hasn't my favourite manga/light novel/video game/ukiyo-e been turned into an anime?" - the answer is just that no-one's bothered doing it yet and there's no real way of ...
According to Kunio Okawara, the mecha designer for the series:
"I also put the form of the chonmage, which is a form of Japanese traditional haircut worn by men, and kabuto, which is a type of helmet first used by ancient Japanese warriors, into the design of Gundam. They are my inspirations that are concealed behind the creation of Gundam."
The first game features the mechas from only the first three Gundam series (namely Mobile Suit Gundam, Mobile Suit Zeta Gundam, and Mobile Suit ZZ Gundam), the OVAs published that takes place within this time frame (Mobile Suit Gundam 0080: War in the Pocket and Mobile Suit Gundam 0083: Stardust Memory), Mobile Fighter G Gundam, Mobile Suit Gundam Wing and ...
As far as I researched it was a combination of plew's spirit and Psycho Frame of Qubeley, but still no clear data can be found on this, but as a reference we can see in the final episode of Mobile Suit Zeta Gundam, Kamille fights with spirits of his friends to destroy Paptimus Scirocco's mobile suit.
It seems that there is always a masked antagonist in the Gundam series, but they vary in how much they resemble the original Char.
In Gundam Seed, it is Rau Le Creuset . Masked, and related by blood to a member of the protagonists camp. IIRC he is also a noble who stands to inherit, but unlike Char Aznable,
In G-Gundam, it would be Schwarz Bruder. It is a ...
you have many gundam series with connections!
For example, Gundam 79, the first one, is in the same chronology line with Z, ZZ, stardust memory and others. this series are differents, but in the same line, in the same conflict (AEUG vs Zeon)
But, Gundam Wing, Seed, build Fighters...are differents.
You can follow this example:
I think both series are just drawing upon many common tropes and most prominently ∀ Gundam, which sports a very similar plot to both series and also predates both.
Although in that case it's the Moon instead of Mars and it's more about an ongoing invasion than trying to be liberated from anything.
More examples include, the majority of the rest of the ...
Assume you're looking for original designs and no redesigns.
He worked on the Gundam 0083 OVA series, where he designed the famous RX-78 GP03 Dendrobium Orchis mobile weapon.
He also did a lot of work in V Gundam, where he was the main mechanical designer, creating the main mobile suits:
V2 Assault Buster Gundam
After that, ...