Seance Dog is character in a comic book series read and favored by Mark Grayson.

At one point, he was reading a comic book about the character in his bathroom until his mother barged in looking for soap which upset Mark.

Shortly after Mark arrived at college, he opted to throw his collectible action figures of Seance Dog and other such characters in the dumpster but had a change of heart about the former.

Later that night, an alien known as Nuolzot came disguised as Seance Dog.