Tinkertae

Shantae... the half genie guardian of Scuttle town... Is stuck. She got a little TOO attached to her Tinkerbat form, and one day found that she couldn't change back. Turns out staying in the form for as long as she did made her lose her genie powers. Even worse, she started to get... urges... to eat others whole; something that she never had before. She eventually started off small, a little rat. She originally didn't want to, but her hunger won out. Upon swallowing the rodent, though, she enjoyed the feeling of it squirming in her belly so much that she wanted to eat more... and more...
One day, Bolo found her, after she had grown a bit from all her eating, and he attacked her with his spike ball. She obviously dodged, and tried to explain what had happened to her... but her voice wasn't exactly the same. Eventually, she tripped and fell on top of him, and to her horror, he started to sink in to her body! Well, she was only horrified to start with... shortly after the process started, she felt pleasure unlike any she had felt before... but once her friend was completely inside her, she instantly felt regret. She decided to get away from Sequin Land because she was afraid that if she went to seek anyone else's concil, she'd be tempted to eat them, too. And so, she found the Nexus.
Her shadowy form is manuverable, and allows her all the abilities of her other animal forms... except true flight. Instead, by spinning her cutlass like a helicopter blade, she can at least glide.

As she eats prey and starts to let go of her inhibitions, she'll lose her sense of grammar, and will become more accepting of swallowing folks whole without worrying too much. (Once she reaches that point, though, I'll still play her in the early stages, but only by request.)

Current canon sense of self: |█████████████░| "Dangit, I lost grammar again...!"

Abilties-
Cutlass: The form came with a pirate sword, for whatever reason. Rather good range, as well.
Climbing: She can climb on any walls, whether horizontal (in the background in the games) or vertical.
Smashing: With a good amount of speed and a thick log used as a battering ram, she can easily break apart large rocks or certain old stumps.
Gliding: As mentioned, if she jumps into the air and twirls her cutlass, she can glide certain distances, or even fly somewhat... if she has a strong updraft to ride.
High jump: As a tinkerbat, Shantae's got MAD ups; she can jump about double the height she normally could: https://www.dropbox.com/s/7vdj2lr071htico/Shantae%20jump%20comparison.png?dl=0 Probably because she's much lighter.
((Shantae and Tinkerbats are (c) WayForward games))