The white Dog from Duck Hunt represents Inuji Darumeshi, a canine character with a white color scheme.
The stage and music track represent the urban setting of Darumeshi Sports Shop, a free Nintendo 3DS game from the Nintendo eShop featuring microtransactions.
The Beastball item and battle condition reference Inuji's occupation as the owner of Darumeshi Sports Shop, a baseball equipment store.
Other trivia:
This spirit's Beastball Equipped ability references the baseball gameplay mechanic of Darumeshi Sports Shop, which is shared with the Rusty Slugger spirit, an international variant of Inuji Darumeshi.
