Emma Frost the horse killer.
I don’t have a preference: they are all awful.
But like Jessica Rabbit said: “I'm not bad. I'm just drawn that way.”
“Strength is the lot of but a few privileged men; but austere perseverance, harsh and continuous, may be employed by the smallest of us and rarely fails of its purpose, for its silent power grows irresistibly greater with time.” Goethe
It seem confirmed in "New mutants" that the shadow king is in Krakoa,
I try to improve my english, feel free to correct me by DM if you see some mistakes !
I gurentree what ever former nazi scientist sinister did beats everyone else.
There are a few that are evil and selfish (Selene, Sinister, Shaw, formerly Emma and often Mystique) a few that are ruthless and idealistic (Apocalypse, Magneto, sometimes Xavier) and then there's Exodus, who is just weak like veal.
He gloms onto someone to follow and is fanatical about whatever that charismatic person is on about. If there was a charismatic *good* person for him to glom onto, I suspect he could be a force for good.
But the kind of folk that have that potential to 'inspire' him, Magneto, Apocalypse, Sinister, tend to be built as bad-guys able to threaten the whole team.
There's less narrative need for good-guys with that sort of crazy level of power and charisma (although some versions of Jean Grey or Storm go there, he's not really been established as being forward-thinking enough to 'follow' a strong woman?). Maybe if someone like Vulcan or Mikhail Rasputin built up a creed and a following, he'd be right there in the crowd, all moist-eyed and fanatical, but those dudes also have a tendency to go off the rails, and they'd take him right over the edge with them...
to use biblical parlance , Exodus just like his name suggests seems to always be the herald not the 'messianic' figure himself.Maybe because of his knightly past he likes to be the John the Baptist character beating the drum for someone else.I think the day he realises there is no one else to drum to because all have fallen short of his ideal and he finally starts beating the drum for himself is the day of Reckoning.Writers need to get their heads straight and write the story of this epiphany