The Tiny Mr. Game & Watch Team represents the Tockles, a diminutive race of multicolored ethereal beings who live outside the flow of time.
The stage and music track represent Erdrea, the main setting of the Tockle's debut game, Dragon Quest XI, who appear as background characters.
The Invisibility rule references how the Tockles appear invisible to humans except for the Luminary.
Other trivia:
This spirit's Fog Immunity ability references how the Luminary is able to see the Tockles outside of their home village of Tickington.