The power to
replace one’s missing appendages with those of another.
The user can replace parts of their body with same organs from outside sources, gaining the powers they'd had before the connecting, such as an eye with night vision would give the ability to see in the dark, a hand taken from a plasma blaster could allow them to fire plasma blasts from that hand.
Users may have a place to keep multiple organs and limbs, this way they can remove what they have and replace it with something they need, or to replace a lost limb and couldn't replace it in case they couldn't find one.
Substitution may take time.
May require stitches or other means to keep parts in place.
After suriving the the Eclipse, Guts (Berserk) replaced his lost left arm with a powerful device known as the Cannon Arm.
Mugino Shizuri (A Certain Magical Index) replaces her arm and eye with her Meltdowner energy.
Ogami Rei's (Code:Breaker) left arm originally belongs to Code:Emperor, and it acts as his second heart, reviving him.
Ashley"Ash" J. Williams (The Evil Dead series) replaced his right hand with a chainsaw after it went "bad" due the influence of the Book of the Dead.
Scar’s (Fullmetal Alchemist) right arm from his older brother.
Wrath (Fullmetal Alchemist 2003) has Edward Elric's limbs, enabling him to use
Shu Ouma (Guilty Crown) replaced his lost right arm with his own
Seras Victoria (Hellsing) substituted her left arm with shadowy tentacles.
Naraku (Inuyasha) took various demons' flesh.
Sesshōmaru (InuYasha) temporarily used a dragon claw to replace his then-missing left arm.
The Creeper (Jeepers Creepers) can substitute his body parts by
…as he demonstrates with the head of one of his victims.
After killing him, DIO (JoJo's Bizarre Adventure) attached his head to the stolen body of Jonathan Joestar.
Terror Inc. (Marvel Comics) showing several "acquired" limbs.
After losing his right arm to Gray Fox, Revolver Ocelot (Metal Gear) had it replaced with one from Liquid Snake.
Kakashi Hatake's (Naruto)
Sharingan originally came from his close friend, Obito Uchiha.
Itachi's crow (Naruto) was implanted with Shisui Uchiha's eye.
During his childhood, Nagato (Naruto) was implanted with the eyes of Madara Uchiha after he attained the
Orochimaru (Naruto) transferred his consciousness to other people's entire bodies.
Toneri Ōtsutsuki (The Last: Naruto the Movie) stole Hanabi Hyuga's Byakugan eyes to gain
Danzo Shimura (Naruto) replaced his right eye with Shisui Uchiha's Sharingan.
Madara Uchiha (Naruto) has his brother, Izuna's eyes to escape the blindness of the Mangekyō Sharingan,…
…and Hashirama Senju's cells to use the
Obito Uchiha (Naruto) had the right side of his body, which had been crushed by a boulder, artificially reconstructed with Senju cells…
…and his left eye with the
Rinnegan that belonged to Nagato and Madara Uchiha.
Fearing the corroding eyesight
by constant use of the Mangekyō Sharingan, Sasuke Uchiha (Naruto) took his brother's eyes to regain the light and awaken the
Eternal Mangekyō Sharingan
Naruto Uzumaki's (Naruto/Boruto: Naruto Next Generations) right arm was replaced by a prosthetic arm made of Hashirama Senju's cells.
Aya Brea (Parasite Eve) was transplanted with her twin sister Maya's cornea.
After losing her left arm to Ruby Rose, Cinder Fall (RWBY) had it replaced with that of a Grimm.
Doc Benton (Supernatural) steals body parts and organs to replace his own damaged or decaying ones.
Kaneki Ken (Tokyo Ghoul) received Rize Kamishiro's organs and Kakuhou, which turned him into a one eyed ghoul.
Babyface's (Toy Story) body parts from an erector set.
Maximillion Pegasus’ (Yu-Gi-Oh!) left eye replaced with
Ernest Fairchild/Evil Ernie (Chaos!/Eternity Comics) taking and converting a severed appendage into his new arm.