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