>>3797971Canonically speaking I always thought his intentions weren't getting laid or even romantic attention, but just to weasel his way in close to people he thought were hiding something. He learnt a behaviour that worked without rousing suspicion. If he didn't shy away from sex then he could use getting fucked as a distraction to pin someone down. Literally. Riding them until their plans fall apart.
Post-98 Vash could possibly get goaded by his brother into proving how much he loves and gets along with humans. He'd freak out internally and mess up the first time. Hopefully whoever he's with will be a kind tease who flusters him at breakfast the next day and forever after.
>>3797976If someone wants even more Vash you could. 98 Vash encompasses all his emotional ups and downs in the TV series, but Badlands is a fixed point of goofiness who's bold and nosy. Like how Trimax Vash has come out the other side of events with confidence and conviction, compared to 98 who only got half the development and is still making nervous laughter. If you put them all in a room together they'd all be acting slightly different.
I just keep typing shit and leaving it hanging in the comment field for hours while other anons say it better goddamn.