Team killer

From AssaultCube

A team killer (or TKer) is a player who kills their own team member(s).

Team killing usually happens accidentally, but can be done purposely for various reasons, such as to annoy other players. By default, AssaultCube will kick players who have a score below -5, but a team killing player can easily reconnect and continue if there is no admin or the admin does not ban them. The value can be adjusted to any value the server owner wishes, but a team killing player could easily keep killing enemies as well as their team members to make sure he/she stays above the minimum score and does not get kicked.