Impulse Creatures (unofficial) are minor characters in 12 Oz. Mouse. They are unknown worm/snake like creatures of some kind colored in green, yellow and orange. They're seen in a purple portal/meteor with green spot like object of some kind. They only appeared in the episode "Bowtime", when Mouse Fitzgerald is saying "because those impulses travel". These three creatures pop up onscreen. It's unknown if these creatures represent impulses of some kind. These creatures are never seen again, and remain unexplained along others such as a Light Creature, Snake Eyes and even a Doctor.
- "Bowtime" (Only Appearance)