Radioactive Man is sent by the U.S. to Transylvanian to capture or kill Dracula on behalf of the Thunderbolts.
Radioactive Man approaches the castle and kills two sentry vampires at its gates. It is night time and Dracula sees him from his Balcony and tells Radioactive Man to turn back.
Well he surely won't be able to give him radiation poisoning or anything. He'd have to use a blast of radiation to destroy his body.
Which given his ability to go into a mist form..isn't likely to happen. As for strength, didn't Drac catch a punch from Colossus?
__________________ Chicken Boo, what's the matter with you? You don't act like the other chickens do. You wear a disguise to look like human guys, but you're not a man you're a Chicken Boo.