The Darksi Cherry is a manmade power-up, created at the hands of Bowser and Kurten (and their co-horts). Upon equipping it, an "evil clone" is created, mostly following the opposite traits of the user, but to simplify; Darksi clones are designed in a way so that the user hates them. Are you a good guy? They're evil and annoying. Are you a bad guy? They'll be hero of the town. Used a frequent amount of times by some notable heroes.. unfortunately; they were heroes, so the Darksi clones are against us. If you see one, avoid it!