The blue Samus represents the ST Falcon, the main playable human-shaped machine controlled by a blonde human with a blue color scheme.
The stage and music track represents the road of New York City, the first level in Battle Clash which features a futuristic city setting.
The music track represents the musical theme of Chōsōjū Mecha MG, which features giant battling robots similar to Battle Clash.
The Super Scope item references the light-gun shooter gameplay of Battle Clash, which requires the usage of the Super Scope to play.
Samus starts off with a Super Scope, referencing the laser blaster used by the ST Falcon which can either rapid fire shots or more powerful charged shots.
Other trivia:
This spirit is featured in the Sheldon's Place shop, which sells spirits related to weapons, referencing how the ST Falcon is a weaponized mecha suit.
