Kaley

Kaley is a member of the Best Fitness Friends and a major antagonist in Mario & Luigi: Bowser's Inside Story + Bowser Jr.'s Journey. She is a blue, bird like creature who attacks using sound based moves, and acts as the group's Aerial fighter (with the Flying type status).

Despite putting on a calm persona in many cutscenes, it's soon revealed she's quick to temper and has a serious drug addiction, with Ludwig's intel when disguised as Beef suggesting she's highly dependent on the group's supplements.

She is first battled in Dimble Wood, after Ludwig reveals that he's been disguised as Beef for the last hour or so. She's then battled again in Bowser Path alongside Dieter, before being fought alongside the other Best Fitness Friends members in the final battle. She then merges with them to form the final boss before eventually being defeated for good.

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Kaley ''The professional cutie of the BFF. At least, she usually talks in a cutesy way. But is that how she REALLY is...?''