More Info on Crestoo: It's the Baby Cockatoo Pokemon. Fun Fact Crestoo is an older Pokemon from my Notebook filled with fanmade Pokemon, and Crestoo was in there! Along with the Evolutions, And this line was my Favorite line of all of them! Of course we have to give it up for *amazing* Pokemon names like, Burndog and Christkitta. It's name Stems from Crest (as in the type of Cockatoo Crestoo is based off of) and Cockatoo. Pokedex entry: "Crestoos Wings haven't grown yet, therefore they cannot fly. Crestoo bodies are mostly round, so they roll around for fun instead of flying."