Mu-on'na, or the Unmother, is looking to absorb bodies into her own to steal souls.

Clayface is a clay monster and is always looking for someone to help "relieve" him, but watch out: he might absorb you if you two get intimate...

Nihilego is a dual-type Rock/Poison Ultra Beast that comes from the Ultra Deep Sea. It is currently looking for Lusamine.

Semi-Perfect Cell is a bio-android who has leveled up after absorbing Android 17 and is looking for Android 18 to absorb her to become perfect.

Imperfect Cell is a creepy villain from the Dragon Ball Z series who is intent on absorbing Android 17.