The vampire looked stunned for a minute at Ben's sudden transformation into Heat Blast, but it wasn't affected for two long. Ben supposed it figured he was wearing a costume or something - being that he found most vampires to be total retards - as it rushed at him ready to chomp down what wasn't really flesh anymore. Or, at least, not in the human sense, being that since he'd bonded with the Omnitrix, he'd stopped being truly human altogether.
Oh well, he simply folded his arms and waited to the creature to get a little closer, to which when it did, he held out an over-sized hand and set the thing ablaze. It squirmed and flailed for a moment or two, before turning into a nice pile of dust at his feet.
"They never learn," he mused, finally noticing the petite Jedi (only, he didn't know that yet) watching him.
"...uh, are you a vampire, too?" He asked her, stepping a little closer. "'Cause if you are, I might as well roast you and get it over with. Kinda got a date with the television and some popcorn tonight. And I warn you, I'm a little on the impatient side, so if you're not a vampire, you better make with proving to me you're not, else I start barbecuing now and regretting later."