I'd have myself maybe something like the Vermaak 88 troops have (inFAMOUS 2). Ice is cool.
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Alex Mercer's powers are a possibility. Would make getting around a lot easier.. I'd probably break a lot of stuff though. (from [PROTOTYPE]) The Force would be pretty awesome. (from Star Wars games, in general) Kameo's powers would be pretty cool. Summonable low-flight wings, the ability to go underground, climb walls, breath underwater, make water from thin air, grapple-hook onto just about anything heavier than you, and roll around at high speeds in an indestructible ball. There are more, but those are the powers I'd care about. Especially the wings! (from Kameo: Power of the Elements) And, finally, a Spark's powers from Project: Spark. I mean, you're literally twisting the fabric of existence into whatever you want, basically.