The grey Giant Meta Ridley represents Bahamut ZERO, a giant dragon with a pale color scheme who is infused with cybernetics.
The stage represents Midgar, a major setting in Final Fantasy VII which first features Bahamut ZERO as an obtainable summon.
The stage and music track reference the battle against Bahamut SIN, another form of Bahamut which rampaged in a city outside of Midgar in Final Fantasy VII: Advent Children.
Meta Ridley's Plasma Scream Final Smash reference Bahamut ZERO's summoning sequence in Final Fantasy VII where it performs its signature move, Tera Flare, a destructive beam fired from outer space.
Other trivia:
This spirit's Support type references Bahamut ZERO's role as a summon in Final Fantasy VII.
This spirit's Attack type and Final Smash ↑ ability further references Bahamut ZERO's powerful signature move, Tera Flare, which behaves similarly to Ridley's Plasma Scream Final Smash.
