wut powers could a knight of rage have please?

Okay so, Serving Rage to others, or Serving through Rage seems like their schtick may be related to going berserker or allowing others to go berserker. They may also just make other people mad constantly. Alternatively, they may Serve Disorder and Chaos, becoming a Wildcard, an unpredictable Agent trying to advance some dubious plot. Or they may Serve Anarchy and try to disestablish the system.