Bad Graphics Ghost

From Homestar Runner Wiki

The Bad Graphics Ghost was spawned by the Tandy 400 to scare Strong Bad in ghosts as revenge for being thrown out. It also appeared as the Santa Bad Graphics Ghost on the Decemberween Email Menu. Most recently appeared in Pumpkin Stencils. Its appearance there though seemed to imply that it is no longer restricted to computers, but roams the real world.

The Bad Graphics Ghost bears a resemblence to the ghost-like monsters depicted in the classic arcade game Pac-Man, developed by Namco in 1980.