Onomatopoeia made by various creatures and objects:
- Steve's conscience in Comic 66
- Loki, the Viking God of Mischief growling in Comic 75 (guest-made)
- The imaginary Bear in Comic 83
- One of Steve's sins in Comic 101
- The Necronomicon as it emanates EVIL! in Comic 108.
- Love, whilst attacking Steve in Comic 202.
- The imaginary/flashback-y Sentient Evil Mutant Space Potato in Comic 231.
It was also uttered by the green-horned monster thingy on Steve's puzzle in Comic 134, even though that wasn't technically an onomatopoeia.