Options to create a single prefab for characters in a game.

I am aware of the generic question, so let me try to be more specific.

I have the need to create a single prefab, that will be controlled via scripts to give different "personalities" to the AI.

I can attach behavioral scripts, so that's not a problem; that will dictate how a character move, how it reacts, the distance at which the unit will start to attack and such (picture it as a NPC in a generic open world).

Now I am curious about the graphic part of the prefab, and about the animations....

Options to create a single prefab for characters in a game.