User Flags
User flags describe special properties of users, including whether they are staff, a verified bot, a bug hunter, etc.
You can change a user's flags by setting the public_flags value in the users table.
You can assign multiple flags by simply summing the respective values.
A list of all user flags implemented on Discord.com is available here
Currently, the only user flag to have an effect on server-side functionality is STAFF ( 1 ).