Virtua Fighter (universe)
From SmashWiki, the Super Smash Bros. wiki
Virtua Fighter (バーチャファイター, Virtua Fighter) is Sega's long-running series of fighting games, notable for inventing the 3D fighting game.
Virtua Fighter is represented in this game by downloadable content costumes for Mii Brawlers based on Akira Yuki, the main protagonist of the series, as he appears in the first Virtua Fighter game, and Jacky Bryant as he appears in the fifth game.
In Ultimate, Akira appears as an Assist Trophy, still in his original polygonal model from the first game, with the recycled voice clips from post-Virtua Fighter 2 games.
The following characters from the series are spirits.