Ralsei does not have a confirmed Light World object in the current canon; the game keeps his origin intentionally mysterious. The safest answer is that he is a Darkner whose real-world counterpart has not been clearly revealed yet, and fan theories are still just theories.

What is confirmed

  • In Deltarune, Ralsei is a Darkner who lives in the Dark World.
  • The story has not officially identified a specific Light World object for him.
  • That mystery is part of the ongoing lore, especially as later chapters continue expanding the story.

Common theories

  • Some fans think he may be tied to a specific plush, horned toy, or other object.
  • Others think he may be unusual among Darkners and not map neatly to a normal Light World item.
  • None of those ideas have been confirmed by the game itself.

In plain terms

If you’re asking “what object is Ralsei in the Light World?”, the answer is: we don’t know yet. The game has not given a definitive reveal, so any exact answer would be speculation.

tl;dr

Ralsei’s Light World form is still unrevealed, so there is no confirmed object yet.