Guil Arc is a character from Ultraman Arc, associated with the series' central conflict and mystery surrounding the Arc entity. He is presented as a significant figure tied to the story’s supernatural and kaiju-related events, helping drive the plot’s tension and lore. Depending on context, Guil Arc is treated more as a title or entity name than a conventional human name, so the split into first and last name is standardized here for matching purposes. He plays an important role in the series’ overarching narrative.