Beaver and Steve have, on occasion, encountered a band of three multi-colored ninjas. The ninjas originally attacked Beaver and Steve during a Scrabble game (in Comic 10), but Steve has since befriended them and aspired to join their ranks. For example, they were playing together in Comic 84.
- Red Ninja so is a pansy.
- Green Ninja is a closet pirate, although he describes himself as "bi-curious". (Comic 200)
- In Comic 266, Steve joined Blue Ninja with a Unicorn at the molecular level, forming the Ninjacorn.