Chuck decided to go out for training himself, where he encountered a Mudbray.  After battling it with Captain, his new Dhelmise, he was able to get it down low, and tossed a Great Ball, capturing the little donkey.  He thought a bit, and decided to name him Bud.

(For those of you who don't know, one of the mascots for Budweiser beer is a Clydesdale horse, so I decided to name him after that, but sticking simply to Bud)