Ppodong is a fantastical hamster capable of growing to gigantic proportions with the help of red sunflower seeds.

He was the first creature ever summoned by Lloyd Frontera and remains loyal to him as a trusty servant and construction assistant. (Cited from the wiki)

Alrighty, what we have here is essentially the Pikachu to Lloyd's Ash. Ppodong literally only says his name, in varying inflections and forms. So for your audition, just do some variations of it! Give me a few happy, a few sad, a few questioning, you know! The name will be pronounced (in our interpretation) Poe-dong, so use that as a reference