The parable of “Majora’s Mask” explores the real-world concept of masks. Boss Remains are masks and the masks you wear in the game are all of the legendary dead. Masks are artifacts that seal the spirit of the entity, sealing also his, her or its power.
Wearing an entity’s mask gives you said being’s “other memory” (Dune), and mindstream. The spirit sealed in a mask can be good or evil. Sealing in general, much less sealing an entity to distinct physical form, takes a great deal of magic / chi (qi) / virtual energy. Seals can be place on pieces of paper, cards and amulets, as protection or to lock away evil spirits.
Masks are also sculpted to look like gods, and embody gods – who are really just immortal spirits – and dead heroes. In Jim Carrey’s ‘90s movie “The Mask,” the supernatural mask is of the Norse trickster god Loki. The film was based off a book series published by Dark Horse Comics (“Hellboy”). The soul of The Mask, like most masks, reacts to the soul and the state of the heart of whoever wears it, turning some into monsters and others into champions.
See also: “The Presentation of Self in Everyday Life” by Erving Goffman.