- "Household born from the flesh of Belial/Zagan, I consecrated my body to you, become one with me."
- ― Seiryuu Ri/Kokuhyou Shuu (Magi The Labyrinth of Magic)
The ability to transform into/with the very entity that one has a symbiotic connection with. Sub-power to Symbiosis.
The user can become/fuse with the entity that they have a symbiotic relationship with, gaining new or enhanced powers that transcends beyond their natural limits. When in a transformed state, users can exchange with or relinquish control of their body or even emulate a fused personality.
- If the host or symbiote grows exhausted, the transformation may cease.
- Jinchūriki (Naruto)
- Jigen (Boruto: Naruto Next Generations)
- Kawaki (Boruto: Naruto Next Generations)
- Boruto Uzumaki (Boruto: Naruto Next Generations)
- Mukuro Rokudo/Chrome Dokuro a.k.a Nagi (Katekyo Hitman Reborn)
- Rize Kamishiro/Ken Kaneki (Tokyo Ghoul)
- Ichigo Kurosaki/Tensa Zengetsu (Bleach)
- Vizords (Bleach)
- Klyntar hosts (Marvel Comics)
- Household Vessel Users (Magi The Labyrinth of Magic)
- Ren Hinaki/Quartier (Yumekui Merry)
- Yugi Motou (Yu-Gi-Oh!)
- Jaganshi Hiei (Yu Yu Hakusho)
- Yusuke Urameshi (Yu Yu Hakusho)
- Shuichi Minamino (Yu Yu Hakusho)