The Red Goblin Society is a mysterious organization in Metal Slug Attack.
Led by the Red Goblin, it was doing well until Ptolemaios destroyed the society in an unknown incident. Due to this, very little is known, apart from the fact that two members survived its destruction; the Red Goblin himself, who swore revenge and searched for allies who could help him kill Ptolemaios. Red obtained numerous allies, although he has yet to return the organization into its previous state. The other known survivor is Humphrey, who eventually joined the Ptolemaic Army.
They appear to specialize in futuristic technology, given Red's drone companion Machyna and the swords he wields.
In the disastrous future, the Red Goblin Society was one of the few remaining organizations that opposed Ptolemaios.