The Mii Swordfighter's costume represents Vince, the host of the Art Academy series who appears as the Assist Trophy enemy.
The cyan Inkling minion's frequent side smash attack features a large paintbrush, referencing the painting gameplay mechanic of the Art Academy series.
The stage represents PictoChat, an art genre game that was released on the Nintendo DS along with Art Academy: First Semester.
Other trivia:
This spirit's Support type references Vince's role in the Art Academy series as the player's tutor.
This spirit's Battering Items ↑ ability references how the Mii Swordfighter's Vince's Outfit and the Inkling's side smash attack both feature a large paintbrush, which serves as a battering weapon in Super Smash Bros. Ultimate.
