The multiverse conqueror in Marvel comics that immediately comes to mind is Kang the Conqueror. This guy is like the ultimate time-traveling warlord, popping up in different eras with his advanced tech and armies, always scheming to dominate everything. What fascinates me about Kang is how he's not just a one-dimensional villain—his motivations are complex, tied to his belief that order can only come through his rule. His variants, like Immortus or Rama-Tut, add layers to his character, showing different facets of his personality across timelines. The recent 'Loki' series even gave him a fresh spotlight, making him more mainstream.
Another angle is the Beyonder, though he's more of a cosmic entity than a traditional conqueror. Originally from the 'Secret Wars' comics, he sees the multiverse as his playground, reshaping realities on a whim. While Kang operates through strategy and armies, the Beyonder is sheer, unfiltered power. Both represent different flavors of multiversal domination—one through control, the other through sheer omnipotence. It's wild how Marvel explores these themes across decades of stories.