Franken-Foot is a patchwork being made from the remains of multiple Origami Ninja. He was created by Raphael in an attempt to have the ultimate sparring partner. He is now an ally of the Ninja Turtles.
He resembles other Origami Ninja, but with disproportionate limbs, as his left arm and right leg are much larger than his other limbs. He has the Turtles' insignia on his face (which was drawn by Mikey), replacing the symbol of the Foot Clan.
Franken-Foot appears to be quite sensitive, as shown when Raph inadvertently insulted him. However, he is also a kind individual, as he was willing to forgive the Ninja Turtles for their verbal abuse.
At some unknown point, Raph assembled the paper remains of a few Origami Ninja, and pieced them together to create a sparring partner. As he didn't think his brothers would approve, Raph attempted to keep his friendship with Franken-Foot a secret. Franken-Foot then overheard Raph telling the other Turtles that the paper ninja were "jerks" who deserved to be shredded, and ran away from their lair.
- Ninjutsu: He demonstrates some moderately creative skill in combat.
- Bodily reformation: His paper body can be easily torn, but he can control these parts remotely and reattach them with glue or tape.
- Paper assimilation: He can control and add paper to his body to repair or enhance himself, though the enhancement effect seems to be temporary.
- Enhanced mystic abilities (when enraged): Near the end of "Sparring Partner", he becomes enraged and concentrates the magic in his body to assimilate the remains of several additional Origami Ninja into a new, incredibly large fist, which he then uses to hit the ground with such a high degree of strength that the sheer force of impact destroys the last remaining Origami Ninja, and sends the Foot Lieutenant and the Foot Recruit flying into the night sky.
- Foot Clan:
- Foot Lieutenant:
- Foot Recruit:
- Origami Ninja:
- The prefix of his name is an obvious reference to Frankenstein.
- The Foot Clan insignia that was originally on his face was upside-down, as the toes of the foot were on the bottom of his face instead of at the top.
- Additionally, the insignia had only four toes on it, instead of five.