Wait a minute. If this is a ghost zone, then those things before they must have been GOST.

GameCube The SpongeBob SquarePants Movie… Wanda Nicktoons Unite Non-Playable Chara… Crocker Nicktoons Unite Bosses (GameCube… Tlaloc Tak & the Power of Juju Voices (P… Sandy Nicktoons Unite Non-Playable Chara… Jorgen Von Strangle Nicktoons Unite Non-… Plankton Nicktoons Unite Bosses (GameCub… Ooblar Jimmy Neutron: Boy Genius Voices… King Goobot Jimmy Neutron: Boy Genius Vo… Cosmo Nicktoons Unite Non-Playable Chara… Professor Calamitous Nicktoons Unite Bos… Gamecube Chuck The Fairly OddParents: Breakin' Da… GameCube, and Wakko From Animaniacs Jibolba Tak & the Power of Juju Voices (…