Mumu
Mumu, also spelled Moomoo, is the cartoon bull that 4chan's /biz/ board posts whenever crypto is pumping. Since July 2018 he's been the bull-run counterweight to Bobo the bear — the two have been arguing over market direction in MS Paint comics ever since2.
Overview
How It Spread
How to Use This Meme
Mumu typically works as a reaction image. Posters commonly drop him into /biz/ threads when prices are pumping or when they want to project bullish confidence, often contrasting him with Bobo when sentiment turns. A common convention is the back-and-forth format where Mumu and Bobo trade wins as the market swings, a setup that started on 4chan and traveled with the character.