CMO

CMO is a character from the upcoming episode of Adventure Time, "Puhoy."

Appearance
CMO looks similar to BMO except it is smaller and its color is brownish-grey.

Due to its smaller size, it is possible that CMO is a handheld gaming system, whereas BMO is larger and thus somewhat more like a non-portable console system (aside from being able to walk). However, CMO appears to not have buttons, which puts this possibility into question, unless it uses a touch-screen instead of buttons.

Trivia

 * CMO was slated to appear in an episode that would discuss BMOs backstory, and would also feature the AMO, which was described as "Death Star-sized". While the episode never made it to production (or has yet to air), CMO was recycled.