Acid Generation – The ability to generate acid, can be manifested through touch or as a spray. Acid generation is a disgusting superpower and is often used to generate horror in the readers.
The Man-Thing (Marvel) has an acid touch (Giant Size Man-Thing #4).
Zeitgeist vomits acid (X-Force #116)!
Corrosion (Marvel) burns Mystique in Mystique & Sabretooth #2 (Marvel).
Carrion Grubs are disgusting creatures that use acid coated mandibles to eat carrion (World of Warcraft Monster Guide).
Spitter (Ben 10) spits slime that can be made acidic.
Acid generation is a horrific power that fits the horror theme of the Dungeons and Dragons universe better than the superhero centered DC and Marvel universes. The Acid Shambler has acidic blood that seeps through wounds on its body thus making a gross superpower even grosser (Creature Collection II. Dark Menagerie).
The Delver exudes acidic slime (D&D 3.5 – Monster Manual I).
The Digester spews acid (D&D 3.5 – Monster Manual I).
Hortas – Who’s Who in Star Trek #1 (DC)
Acid Hands Mcgillicutty
Acid Reflux the Fleshboiler
Acid Resistant Claws
Acid Trap Hole
Tattoo Remover (Acid)