The black Richter represents Malos, the main antagonist of Xenoblade Chronicles 2 who features short black hair and a wears a black outfit.
The three Giant Meta Ridley minions represent the Artifice Gargoyles, a series of giant winged automatons that Malos summons in Xenoblade Chronicles 2 and Torna ~ The Golden Country.
The stage features Metal Face as a stage boss, representing the Artifice Aion, a giant humanoid Artifice piloted by Malos in Xenoblade Chronicles 2.
The music track represents the musical theme of Malos' boss battles, which is heard during the first, third, and seventh chapter of Xenoblade Chronicles 2.
Richter starts off with a Beam Sword, referencing Malos's usage of his Dark element Monado sword, which features a glowing purple color scheme.
Other trivia:
This spirit's Battering Items Power ↑ references Malos' role as an Aegis Blade and proficiency with his purple Monado.
