In Molten Aether FFRP, players have wide creative freedom to explore various character types within the game’s expansive multiverse. Characters must be original, though they can be inspired by existing universes without directly copying known figures. The game’s setting allows for a mix of scientific and magical backgrounds, where characters can come from diverse origins—whether they are soldiers, mages, scientists, or beings from different planes of existence.
Players may create characters ranging from mundane humans to sentient animals or otherworldly beings. More unique character types, such as entities that transcend the mortal realm (spirits, deities, or cosmic forces), are possible, offering rich narrative opportunities.
Certain character types are restricted or banned, including copies of mythological figures like Zeus, and characters from specific franchises such as Dragon Ball Z and Warhammer 40k. Characters designed to be offensive or inflammatory, such as those embodying Nazi ideologies, are also prohibited to maintain a respectful and inclusive environment.