An awesome my singing monsters YouTube with a fanbase mostly consisting of toxic fanboys and fangirls and brain-dead toddlers
Damn it mantisboi! Quit being a shit eating fuckbag and fix your fucked up community!
by TotalRandomness62 July 15, 2020
Get a Mantisboi mug for your Facebook friend Manley.
It's a Cool MSMTuber creator of the Fanmade MSM Monsters called Upbeats, which in there's Truccus
Guy 1: Have you heard of the youtuber MantisBoi?

Guy 2: No, what content does he makes?

Guy 1: He knows to animate stuff in Moho 12!

Guy 2: Woah seems legit
by Legobot1441 August 20, 2019
Get a MantisBoi mug for your mom Rihanna.