/kick user
Kick the input user from the server.
Kick Members
/ban user
Ban the input user from the server.
Ban Members
/ban-id user id
Ban the input user id from the server, even if they are not in the server.
Ban Members
/purge # of messages [user]
Remove # of messages from the current channel. If a user is specified, only that user's messages will be deleted.
Manage Messages