分身
分身 means a copy of oneself. You can use it for literal clones in fiction or for figurative extensions of a person, like their child or creative work.
Readings
Other forms
Clone / Doppelgänger
A physical copy of a person, most often seen in fiction like manga and video games where characters use magic or special abilities to multiply themselves.
Example
The ninja used a cloning technique to confuse the enemy.
Alter Ego / Other Self
A person or thing that is seen as a figurative extension of oneself. It describes a deep connection, where someone views their child, student, or creative work as a representation of their own spirit or identity.