Just casually watching episode five again and for a split second at the end I found something interesting.

I showed my friend (http://kfc-greasequeen.tumblr.com/), who is also an avid fan, and we have deduced that the man in episode five (with a striking┬áresemblance┬áto the Lieutenant) is Lieutenant’s twin brother and the reason why he hates benders so much.

Head canon until proven otherwise.