Howdy Belter,
Now at first blush, an uncontrollable bit of movement based on chance and without much in the way of predictability may not seem like much of a super power. However, there are times when you got a MIGHTY need to not be where you are right now: locked behind a bunch of stuck barriers, left with only the worst of bad news blocking your way out, staring into the hungry maw of an alien or over the barrels of a couple of pirates' boarding irons? Well then you want to duck into a vent and scurry like hell. Because wherever you end up, it's better than where you are.
It's a panic button. A hail-mary. A last-ditch effort that has saved more than one Void Rat from ruin on more than one occasion. When in doubt, get the hell out. Bamf.
Hope that helps.
Chariot, out.