"Sparkle", a new Harasser. Six small x-pulse laser goodness.
Basic idea was that it can rip shit up pretty quickly provided it can look at something long enough, but the light armor of the Harasser combined with how such a setup is so prone to losing damage from shake (Not hard to cause to a hovercraft, on top of that) makes it easy to deal with if done properly; if he can wail away ignored (poke enemies who are preoccupied with other allies), then it can be pretty nasty.
That was sort of the idea anyway. Might have turned out to be a bit too much for some players, though I've personally never had a problem scaring them off. If I'm at the point where I'm being overwhelmed by a Sparkle & something else, it's usually a situation I would've died in regardless if it were that Harasser or something else anyway.