Dee! I wanted to do Sweet Dee, but damn SE and their oppressive no spaces/double capitals. So just Dee. You know. I giant, flightless bird.
I named it Graceevia.
...
While leveling up my alt, I have named my alt's chocobo Chocobro, because why not.
Bow before the mighty Javoo!
L20, I believe. Keep churning through story and once you join a Grand Company, take the quest nearby called something like My Little Chocobo (I think) and it'll require 200 Grand Company seals to get the item that allows you to complete the quest, unlocking your chocobo.
At L30, you can then take on a quest (started at Camp Tranquil, if I recall correctly) that allows you to have your chocobo fight alongside you.
Bow before the mighty Javoo!
Mine is Cupcake now lol
So this is love and See you space cowboy were made for me.
I named my Rantzien so I could throw snowballs at its face, take a screenshot and send it to him. I did it out of *love*.