Pip

Dog-Chan is a mysterious duelist appearing in the Yu-Gi-Oh! ZEXAL anime. As Cathy, Dog-Chan appears to love dogs and have or take care of many of them.

Biography
After a stray mutt stoles Yuma's Heart Pieces, he and Cathy run to retrieve them. But Cathy, who ran ahead faster than Yuma, finds a pack of dogs waiting for her. Then, Dog-Chan appears and duels Cathy.

Deck
No card of Dog-Chan's deck was shown, but it seems to be a Dog themed Deck, just like Cathy's Cat Deck.