Meme & Momo are Vincent's.
They are summoned from being pulled out of his hat.

Zombie Doll is Jigoku Jr's.
It was created by scientists ,and... stuff. Long story short ,it's her's now.

Black Parade Mini Minion
Tumer's first level of minion. Their reason is to eat to help fuel their master and the other minions. They other minions can not eat for themselves (or at least only the 2nd level).