Candy is Sweet Tooth's girlfriend in Holy Musical B@man! She is a villain in his army.
She see,s to be heavily based off of the DC Comics character, Harley Quinn, the henchgirl/girlfriend of the Joker. Candy shares a similar relationship, specifically including her nickname (S.T - Mr.J) and their exchange in Act 2 Scene 1, when Sweet Tooth reminds her who makes the puns ("That's a real gasser, huh Mr. J?"). She also shares Harley's distinctive two-tone costume style.
This text was primarily based off of information from w:c:starkid