Sanguivore - suck the life force, or blood for short, of your prey.
Fungivore - power your poison toxicity and immunity by eating mushrooms and molds. Oh, and bacteria.
Nectarivore - fuel your energy bursts with flower nectar.
Scavenger - use rotten carcasses to your advantage.
Planktivore - want insectivore underwater? We have that covered.