Frenchie

Serge, known as Frenchie, is a French-Algerian weapons expert, chemist, and former mercenary who serves as The Boys' tech specialist and heart. Beneath his jovial, culturally omnivorous exterior lies deep guilt over past actions — particularly his failure to stop a supe called Lamplighter from killing children. Frenchie's story is one of seeking redemption through protecting the people he cares about.

Frenchie's most significant relationship is with Kimiko Miyashiro, the mute former child soldier he helps rescue from Compound V experimentation. Their bond transcends language — literally, as Kimiko communicates through sign language and gesture — and becomes the show's most tender relationship. Frenchie teaches Kimiko about the world she missed during her captivity, while she helps him confront his guilt and find purpose.

Across the series, Frenchie grapples with addiction, guilt, and his complicated identity. His bisexuality is explored in later seasons, and his past as an enforcer for organized crime continues to haunt him. Despite his self-destructive tendencies, Frenchie consistently proves himself as the most empathetic member of The Boys, driven by love rather than vengeance.