The grey Meta Knight fighters represent the Dracky, a flying enemy who features a bat wing design and a black color scheme.
The red and green Meta Knights each represent two of the Dracky's variants: the red Drackolyte, and the green Drackmage.
The stage represents Dracula's Castle, the lair of Dracula who can transform into a swarm of bats, which serves as the inspiration for the Dracky's namesake and bat design.
The music track represents the battle theme of Dragon Quest XI, which plays while battling enemies, including the Dracky and its different variants.
The Defense ↓ rule references the Drackmages' ability to use Kasap, which reduces the defense of all members of the affected party.
The "increased jump power" battle condition references the Dracky's bird family, which allows it to fly.
Other trivia:
This spirit's Lightweight ability further references the Dracky's ability to fly and hover weightlessly in the air.
