Mimu is a bot, that has no use on Discord. Mimu also is spreading through servers like a virus, which it is. Mimu is only added to servers because uneducated server owners see it on other similar servers, and add it, thinking it's a good bot. It is not. Why? Just add it to your server and see for yourself. 

Also, on a personal note, Mimu has been causing trouble on one of my friends' servers that I moderate, I don't know if the owners of Mumu did it, but Mimu decided to keep sending messages when people did. These messages often were in this format: GG! @user you were promoted to level 10! 

this would bring unneeded mentions and in some way spam. Many servers have this feature, making the server unusable to many people.

Mimu also has a very displeasing profile picture, which can mentally scar an individual. This is not acceptable.