Humiliating Raph even further. His brothers would bound his chunky wrists behind his back and tie his cankles to a chair. Then they would rub baby oil on Raph's obese body and feed him ludicrous amounts of cake, telling him how fat and out of shape he is. No longer the muscle, now the 500+ lb pig.

YEAH! I LOVE ZOOTOPIA OCs!

If it helps...

I interpret Zootopia 2's post credit scene as Judy secretly having romantic feelings for Nick as she plays his confession over and over on her Carrot pen, much to her neighbors annoyance.

Leo was Adamant about not needing a mobility aid device from either Donnie or Raph. He was determined to shed those pounds... at least he was. Leo would never admit it to his bros, but he loved how fat he was. Leo was finally able to actually relax for once. To just gorge and pig out.

Donnie was definitely the fattest of the turtles... that is until late one night when Leo and Mikey burst into his lab hauling a 600 lb Raph enraged and yelling for more food. Well, Donnie was gonna have a fat assistant for the time being.

If I could, I would draw Judy Hopps in this to spite you.

Its from a short trailer

Raph's neck and back fat bunched up together as he laid upon his ginormous belly and continued to eat in his sleep. If Donnie was chubby, if his brothers were fat, Raph was downright obese. Angry and horrified of what was happening to his body. Raph was clearly Donnie's favorite to fatten up.