Simon Fubuki, founder of Fubuki Industries, initially serves as the primary antagonist in *To Be Hero*. He wields substantial wealth and influence to manipulate the world for personal gain, showcasing cunning business acumen and strategic intelligence. His motivations stem from complex personal interests, rendering him a morally ambiguous figure who elicits both fascination and frustration from others.

His role shifts in the spin-off *To Be Heroine*, where he becomes a secondary character providing support to the protagonists. Despite this narrative change, he retains his eccentric personality and affinity for luxury. Within this context, he displays humor, contributing to lighter story moments and becoming more approachable.

Across both series, his character develops as his backstory is gradually revealed, adding layers to his motivations. This progression renders him more relatable as his questionable actions gain clearer context. He possesses distinctive purple eyes and long purple hair styled in a topknot reaching his chest.

Throughout his appearances, Simon maintains a flamboyant and unpredictable demeanor, consistently leveraging resources to achieve objectives. His journey transitions him from an isolated, self-serving figure to one capable of forming alliances, while his core traits of intelligence and wealth remain applied differently.