Yes, that Ugly Sonic. The joke is that Chip and Dale run into Ugly Sonic at a convention, the version of Sonic that was the original CGI hedgehog in the first trailer for the blockbuster Sonic movie.
Still, the specter of Ugly Sonic lingers, even if Paramount hasn’t really acknowledged its big fumble in five years. 2022’s Chip ’n Dale: Rescue Rangers featured Ugly Sonic in a hilarious cameo. Now ...