How can I get one? I couldn't find it under create a pet. =/

Endeavor's are occasionally "restocked" at Atebus, here.

You can also use any color Endeavor elixir to morph one of your current pets into one.

Ah. Okay, thank you! (: Lol I didn't even think of using an elixir. >.>

; Lock please & Thank you!