Getter Robo: Armageddon

Disregard for alchemy’s laws ripped half of Edward Elric’s limbs from his body and left his brother Alphonse’s soul clinging to a suit of armor. To restore what was lost, the brothers seek the Philosopher’s Stone. Enemies and allies – the corrupt military, the Homunculi, and foreign alchemists – will alter the Elric brothers course, but their purpose will remain unchanged and their bond unbreakable.

100 years ago, the last remnants of humanity were forced to retreat behind the towering walls of a fortified city to escape the massive, man-eating Titans that roamed the land outside their fortress. Only the members of the Scouting Legion dared to stray beyond the safety of the walls – but even those brave warriors seldom returned alive. Those within the city clung to the illusion of a peaceful existence until the day that dream was shattered, and their slim chance at survival was reduced to one horrifying choice: kill – or be devoured!

Follows a sociopathic genius scientist who drags his inherently timid grandson on adventures across the universe.