In the fight between Roxy and Ramona - which Roxy calls a "league game" in reference to The Big Lebowski - Ramona wields a video-game hammer out of the original Mario Jumpman game. When it gets covered by a force-field, the same sound plays as when a force-field raps around Sonic in Sonic The Hedgehog. By weapons contrast, Roxy wields a bladed whip. Such a weapon can be found in the Soul Calibur gaming series, where its wielded by the impossibly-proportioned Ivy. Also, Roxys surname is Richter, a nod to the Castlevania franchise where a number of Richter-named characters use whips. When she shatters the disco ball with her weapon we can the two fighters faces, miming the model of choose-your-fighter screens seen in countless fighting videogames.