|Alias|| Goop Monsters|
|Enemies|| Max Steel|
Commander Forge Ferrus
Roberto 'Berto' Martinez
Katherine 'Kat' Ryan
Acid Goopaniods are Goopaniods that are made out of acid, which was absorbed by Toxzon Acid (Toxzon), and then released by him. These Goopaniods are like the Green Toxin Goopaniods, only that they are made out of acid, not out of the Green Toxin. These were destroyed and then the puddles merged into one Giant Acid Goopaniod. They first appeared in Supermania.
- This type of Goopaniod was also in a group.
- First time that the Goopaniods merge into one Goopaniod.
- They look like the Green Toxin ones.