I'm a sucker for the good ol' strap and this entire fandom seems to agree on Trevor being a bottom, so there we go!
(tran!Alucard is just my personal preference. I mean, the guy got kneed full in the crotch and didn't even flinch... I'd rather believe Dracula and Lisa knew hormore alchemy than think his deluxe vampire dick is just too hard to be harmed. But that's just me lol)