Mumu
Mumu, also spelled Moomoo, is the green cartoon bull that personifies a bull market on 4chan's /biz/ board1. He first appeared in July 2018 as a counterpart to the bear character Bobo and stuck around as a /biz/ staple long after2. Mumu later inspired a 2023 Ethereum memecoin called Mumu the Bull ($BULL)1.
Overview
Mumu, also written Moomoo, is the cartoon bull that personifies a bull market, the trading term for a stretch of rising prices1. The crypto and trading community treats him as the mascot of the bull run, a role dating back to 20181. He's drawn in the wobbly MS Paint style of Apu Apustaja, the same base behind many of /biz/'s finance characters3.
Mumu's identity is built around his rival Bobo, the bear who stands for falling prices, and the pair are framed as locked in an endless struggle over where the market heads next3. A third character, Snibs, joined later to represent a flat, sideways 'crab' market4. Together Bobo, Mumu and Snibs make up the trio /biz/ uses to read the market's mood4.
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.