TV-Series
Description
Casshan, also known as Casshern, exists across distinct narratives in various media. In the original 1973 storyline, human Tetsuya Azuma voluntarily merges his consciousness with an artificial body, becoming the android Casshan to combat BK-1. Created by his father Dr. Kotaro Azuma, BK-1 gained sentience after a lightning strike, renaming itself Braiking Boss. Leading a robot army, Braiking Boss seeks humanity's eradication, believing it essential for Earth's ecological survival. As Casshan, Tetsuya wields superhuman speed, strength, and agility. His features include a retractable face mask, a crescent-shaped solar panel on his forehead for energy absorption, and waist-mounted pulsar propellers used for propulsion and combat. This form requires solar recharging, limiting sustained battle capability. He partners with Friender, a robotic dog rebuilt from his deceased pet, which transforms into vehicles like jets or tanks and aids in combat. Human ally Luna Kozuki later employs an electromagnetic pistol effective against robots. Casshan's mother Midori Azuma has her consciousness transferred into a swan robot named Swanee, observing Braiking Boss and providing holographic guidance to her son.

The 1993 OVA *Casshan: Robot Hunter* offers a different origin. Scientist father Kotaro transforms Tetsuya Azuma into Casshan to battle the Neoroids, rebellious super-robots originally designed to prevent ecological collapse. This iteration emphasizes Casshan's sacrifice of humanity for power, haunted by his mother's murder. He allies with Luna Kozuki and Friender to destroy the Neoroid army commanded by Braiking Boss. Key events involve confronting Braiking Boss's claim of possessing Dr. Azuma's soul, Friender's sacrificial death, and Casshan's own demise after defeating Braiking Boss, triggered by a failsafe deactivating all robots.

The 2008 series *Casshern Sins* reimagines Casshern as a pre-existing android weapon created by the scientist Ohji under Braiking Boss's command. Designed as a perfect killing machine, he assassinates Luna, known as "the Sun Named Moon," causing the global cataclysm called the Ruin. This act triggers widespread robotic decay while granting him immunity. Losing his memories, he wanders the ruined world as "the Man Who Slayed the Sun." He retains superhuman capabilities, regenerative healing causing intense pain, and sporadic berserker states where his eyes glow white during extreme combat stress. His journey involves alliances with companions like the robot dog Friender, the vengeful robot Lyuze, and the human girl Ringo. Evolving from a naive amnesiac, he accepts his role as an embodiment of death, necessary to teach the reborn Luna—now a false life goddess—that mortality defines true existence. His final act spares Luna but vows to return if the world forgets death.

The manga *Casshern R* (2023–present) adapts the 1973 storyline, depicting Tetsuya Azuma's transformation into Casshan to fight the android army of Braiking Boss.

Across all iterations, recurring traits define Casshan: brown hair, blue eyes, a white body suit with black accents and a chest "C" emblem, a collared helmet with retractable mask, and pulsar jets at the hips. His combat style emphasizes close-quarters destruction, often exploiting robot vulnerabilities like antennae. Friender remains a consistent companion with transformation abilities. The character's core conflict consistently revolves around his artificial nature, the weight of violence, and the pursuit of redemption or purpose amid apocalyptic consequences.