Been a while, eh? Even if this is slightly old progress by now, it's something I feel confident isn't too spoilery. 

          While I initially planned to have Drinn recaptured and eventually unlocked as the final playable character in World 4, she now joins your party immediately after her initial rescue midway through World 1. While I could fluff myself up with some penitent speech about how horribly retrograde it was of me to consider damseling the same girl character twice in one game, the simple truth is that I wanted the player to have their full roster assembled by more or less the halfway point. 

          Gameplay-wise, Drinn is some combination of speed character and general zany gimmick repository. Pretty much everything she does has some kind of goofy or cartoonish flare, and above necessarily fitting into an archetypal playstyle mold, she's basically designed to just be 'the fun/ny one.'