Hendrickson’s story traverses manipulation, villainy, and redemption. Raised among Istar’s druids, he guarded decomposing corpses—a duty he resented, haunted by an ingrained fear of death that later fueled his obsession with forbidden experiments. As a Holy Knight of Liones, he bonded closely with Dreyfus until their encounter with the demon Fraudrin fractured their alliance. Deceived into facilitating Fraudrin’s possession of Dreyfus, Hendrickson helped murder Zaratras and frame the Seven Deadly Sins, culminating in their wrongful exile. This betrayal twisted his compassionate nature into a warped conviction that perpetual conflict was essential to validate the Holy Knights’ purpose.

Demonic experimentation defined his descent. Discovering the Red Demon’s corpse spurred his New Generation project, infusing Holy Knights with demon blood. Consuming both Red and Gray Demon blood himself, he gained regenerative healing, corrosive magic, and Hellblaze flames, shifting between forms: a youthful Blood-Red form marked by black sigils and an Ash-Gray hybrid state with jagged horns and tattered wings amplifying his destructiveness. His transgressions escalated—reviving corpses via the forbidden Shisha Shieki ritual, manipulating allies like Helbram, and unleashing the Demon Clan from the Coffin of Eternal Darkness, plunging Britannia into chaos.

Defeated by the Seven Deadly Sins and severed from demonic corruption, remorse reshaped him. Atonement drove him to confront the Ten Commandments’ resurgence, openly accepting responsibility for past crimes—Griamore’s rage over Dreyfus’s presumed death, King’s suspicion, and countless lives shattered. He healed allies, purged demons with his Purge technique, and allied with former foes to defend Liones. Though guilt lingered, glimpses of his gentler self reemerged: clumsy sincerity, unguarded trust despite warnings, and a resolve to mend what he’d broken.

In *Four Knights of the Apocalypse*, he embodies quiet penance, running a Liones medic workshop dedicated to healing and shielding the vulnerable. This transition from warmonger to healer mirrors his druidic roots—now channeling corpse-tending skills into purifying demonic taint and sensing supernatural threats. His arc reflects a reckoning with the fallacy that peace devalued Holy Knights, replaced by the understanding that true purpose lies in safeguarding life rather than perpetuating strife. Once a manipulator who orchestrated ruin, he endures as a scarred yet steadfast guardian, his legacy rewritten through acts of silent reparation.