Three new slots on the VS character select screen: Anton, Annie and Satan from ANTONBLAST. The original 12 fighters stay exactly as they were, in VS and everywhere else.
In a match they're animated 2D sprites, drawn from your own ANTONBLAST install (none of its art ships with this mashup).
Their own stock icons in the HUD, and their own name on the results screen ("ANTON WINS!").
Each has their own feel: Anton is quick and heavier, Annie is fast and floaty with a triple jump, and Satan is a slow heavyweight who's hard to launch.
Plush-ragdoll knockouts: when launched, Anton tumbles in his angel flop, Annie in her slam-land, and Satan goes dizzy.
Victory poses: Anton does his boss-beaten dance, Annie stares, and Satan has a flowchart idea.
Needs your own Super Smash Bros. 64 (US) and ANTONBLAST on Steam. Local play on one PC, like the original game's VS mode.