One of Vince's destructive characteristics is his "Bleeder" ability. According to the official Wikipedia page,

"Bleeders have the ability to emit high-pitched sonic vibrations that cause ruptures in a target's blood vessels. While using this ability, their pupils turn into vertical slits, like a snake's, because of synthetic materials implanted in them to protect their blood vessels from the effects of their own ability."

Either that or a very pissed off spitz.

Vince @  deaconstrucTEF
Push @ Paul Mcguigan