The childlike Empress (The neverending story), likely the direct prototype Callie is based on just as Bastian is the prototype for Caliborn’s Lord, forgot to mention him last time.

Also forgot to mention Pokey Minch (from earthbound/mother 3), who I see as a Lord of Life and also a direct influence on caliborn

Anthy Himemiya from Utena, Muse of Hope (or maybe Heart? I go back and forth) roleplaying a Witch of Rage (or maybe Mind)

The shadow girls from Utena collectively play the part of muse of void, too.

Madoka Kaname (Madoka magica), Muse of hope

Junko enoshima (dangan ronpa), Muse of rage and/or Doom

Momoka Oginome (mawaru penguindrum), muse of heart roleplaying Witch of Heart (she’s Very good at what she does, ok)

The holy ghost and the muses from Greek myth seem like the clearest mythological links, too.

Lil Cal and Doc Scratch arguably evoke LE’s roleplay of the Muse role in some ways, just as Callie’s direct destruction of the green sun evokes her roleplaying Lord

That’s all I got in my head right now