Gary is an ordinary Goomba and a member of Bowser's army, the Koopa Troop. In Super Paper Mario, Gary is one of the many Goombas transported to Bowser's wedding to Princess Peach and later, to Count Bleck's castle. After the events of Chapter 2-4, in company with an unnamed Goomba, Gary eventually finds Luigi laying unconscious. Having convinced Luigi to act as their bodyguard, they continue to venture through the castle. Eventually, they find a dead end, and they are caught by Nastasia, who hypnotizes and brainwashes Gary into serving Count Bleck. Gary then helps hold down Luigi for Nastasia so she can hypnotize and brainwash him into serving Count Bleck as well.

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