Mix-Up Madness is a Phrenzy themed after Darkheart, who appeared on top of Zuka’s truck in Crossroads. When spoken to he would bring you to a separate lobby from the PHIGHT! Lobby. In this lobby players were able to complete in 5v5 matches with randomized Phighters for points. Points were only awarded in this lobby and unable to be earned in the regular PHIGHT! Lobby. A leaderboard could be found in the spawn area of the Phrenzy lobby displaying the top 10 highest scoring players, which was later changed to the top 100. During these Phrenzy matches Darkheart would occasionally trigger random effects on players, similar to his Sword event, although less frequently. Each time one of these effects triggered the pitch of the song would change.