Apparently, Sega's plan is to represent every Sega franchise ever in Sonic & Sega All-Stars Racing -- except, of course, for Segata Sanshiro. The publisher announced two more playable characters today (well, four, actually, in pairs): Virtua Fighter's Akira and Jacky, and Bonanza Bros.' Mobo and Robo. The Virtua guys appear to be riding in a red Ferrari, which would add the OutRun franchise to the list as well. All these reveals are in line with the character portraits found hidden on the website.
NiGHTS will appear in the game as well, though not in a capacity that will cause superfans "DiGi" and "Trippy" to lose their bets and burn their NiGHTS memorabilia collections. The androgynous dream-monster will appear as the flagman in the racing game.