We have a very specific set of rules for usernames on both Discord and Minecraft.
You can't have a username that:
It depends. Here's a few scenarios:
If you have a legitimate copy of Minecraft, and you don't want to change your username through mojang.com, ask a moderator to change your nickname to something else.
If you don't own Minecraft, change your name in the launcher or you will get banned
If you don't want to change your Discord username, use the nickname feature (or we will do it for you, and you won't like what we pick)
Not allowed because of the lack of normal characters
Not allowed because it's the name of a Code Lyoko character
Same as above. If your name is actually Jeremie, talk to the mods.
Not allowed because it can't be used as if it's a name. You can't expect us to say "hey, gksqzeoKKSdqslAZRf, how are you doing?"