>>3813810No, Trimax Vash had his darkened face moments and times when he spoke with a dominating confidence. Even Wolfwood isn't immune to getting shaken up when Vash gets serious. I love the dynamic where a friendly character can suddenly seem threatening and catch people off guard, and I especially like implications that an alien character could be an apex predator in disguise. Top Vash taking someone for a wild ride against their will is great. God he'd suffer internally for it after.
On the other hand he acts like an oblivious idiot, so playing up that role in sex works too. Whether it's bottom Vash who doesn't seem aware of how voracious his sex drive is, or top Vash who greedily ignores how his partner expected their positions to be. Don't forget the old joke too: Vash is very good at shooting his weapon. Plants are skilled! Why settle for basic plantussy when you can get the deluxe retractable phallus edition? Bonus points for it slipping free at the wrong moment and becoming increasingly obvious in his pants til he turns red as a geranium and ends up pathetically pleading for a little hole.
Veering from canon as I am, there's a fic on Ao3 where '98 Vash keeps Knives locked in an attic full of bullet wounds, strapped to a bed, and starts fucking him. Cuts off too soon to really take advantage of the mindbreak element but I'm glad someone gave that bitch a dicking, and Vash is perfect for it.