Betterman(1999)

Betterman is an anime series set in a world ravaged by a deadly virus called Algernon. The mysterious Akamatsu Industries leads humanity's fight against the outbreak, deploying advanced bioweapons called NeuroNoids to combat the threat. Central to their covert operation is Betterman, an enigmatic mutant whose true nature and allegiances remain shrouded in mystery. As the virus spreads and the stakes escalate, Betterman becomes instrumental in the organization's secret efforts to save humanity. The series blends sci-fi action with intrigue, exploring themes of survival, transformation, and the moral cost of using enhanced weapons against an existential threat.