It was nice to see one of the male characters kick some ass. The Guardian is a good character, not ridiculously strong so he would outshine HiFuMi or Izuru, but strong enough to play a role in the series.

There have been other male characters who tossed some of the girls around, but this is one of the first we can actually root for (and isn't one of Motoko's fathers, who only appear for single arcs at a time).