The pink Roy represents Leif, a sword-wielding protagonist who features reddish hair and wears a similar outfit.
The stage represents the capital castle of Leonster in the seventh chapter of Fire Emblem: Genealogy of the Holy War, which first features Leif as a party member.
The first battle condition references Critical, a combat skill used by Leif in Genealogy of the Holy War, which allows him to perform critical hits.
The second battle condition references the effects of Light Brand, Leif's main weapon in Thracia 776, which allows him to fully restore his own HP.
Other trivia:
This spirit's Attack type and Sword Attack ↑ ability references Leif's Prince class, which allows him to use swords and features a high strength stat.
