VIDEO : New 'One Piece' Preview Hints At Big Mom's Evolution

Comicbook.com reports 'One Piece' has debuted many brand new forms and abilities for its characters...

...and Big Mom is about to become skinnier and fiercer in episode 863 of the series!

A preview for "Break Through! The Straw Hats' Mighty Sea Battle!" features Carrot at the end of her Sulong transformation.

An "evolution" for the powerful Yonko, who has suffered from hunger, is also hinted.

These characters may now have to battle Big Mom directly...