Ragnarok is a major antagonist in the anime and manga series Soul Eater. He is a weapon partner originally paired with Crona, serving as the Demon Sword. Known for his sadistic personality, Ragnarok frequently bullies and manipulates Crona, amplifying their instability. His role in the series is significant, as he embodies the corrupted essence of a weapon gone rogue, contributing to the chaos and conflict faced by the main characters. Ragnarok's dynamic with Crona adds depth to the story’s exploration of madness and fear.