The Ugly Dog is a crappy scribble that is supposed to look like a dog, apparently, and is seen on the Imaginary City Streets. The Dog (or more accurately, the man walking him) was called into battleMspa icon during the first boss fight, but unfortunately he was "a brainless nonentity". During his first imaginary life, Ace Dick placed the ugly dog in his inventory; however, Ace Dick died shortly thereafter and thus the ugly dog was reset to his previous position.

Problem Sleuth (as his Candy Corn Vampire alter ego) uses the Ugly Dog as part of a Scythe attack hereMspa icon.

Ace Dick later adopts one in his Game of Life.