Roller derby name

In roller derby we are expected to choose a name for ourselves that becomes our public persona.  Some evoke menace, others are silly, but they almost always involve some amount of word play.  Examples might include: "Tara Armov," "Isabelle Ringer," and "Maiden Hell."

I am, however, experiencing a bit of a block in coming up with one for myself and hoped this fine community could help.

Firstly, as a referee, the name would ideally incorporate elements of that role, like enforcement or justice.  It needs to be short, preferably two to three words in length, and since I'm a guy, male or neutral gendered names would be appreciated.  I had previously come up with "Loudon Clear," but realized I'm not much of a fan being called "Loudon," even if it demonstrates what I'm aiming for in a name.  Lastly, if possible, I'd love suggestions that use the real name "Hans," but at this point I'm open to any suggestions.

Thanks in advance for helping me work this out