I can figure the rest of this image out, but I just don't know what anime/manga the sword and the dog are from. Can someone help me out?
The dog is a smaller version of Sadaharu from Gintama
The colour of the dog is of course Pikachu.
The sword is the Shikai form of Zangetsu, Ichigo's sword from Bleach.
For the record, here are the rest of the references:
The color of the dog references Pikachu from Pokemon.
The guy's hair references Death the Kid from Soul Eater
The guy's face references Goku from Dragon Ball
The whiskers belong to Naruto Uzumaki from Naruto
The hat belongs to Luffy from One Piece
The scarf belongs to Natsu from Fairy Tail
The necklace belongs to Yugi from Yu-Gi-Oh!
The prosthetic arm, the torn shirt and the robe are references to Edward Elric from Fullmetal Alchemist
The apple is probably a reference (?) to Ryuk from Death Note.
I think the sword is Dragonslayer, Guts' sword from Berserk.