(In a reality where the End of Time was during the Medival period, Harbinger joined a large kingdom that surrounded the center of the island
A creature named The Black Mist raised an army of undead soldiers, skeletons and the like, to destroy the kingdom, Harbinger was the only one left after everyone was killed, and killed hundreds of them before they finally overtook him
A bit into the game, The Black Mist resurrects him, and you have to fight his reanimated corpse as a boss)
"Hehe...." Her tail wagged.