Which other Marvel/DC characters could and would conquer the Shi`ar?
Okay-Imagine that Vulcan never made his move on the Shi'ar Empire, and that the conditions are exactly the same as when he did for your chosen character.
However, there are a couple of conditions: It must be in character (or at least not a complete stretch of the imagination) for them to attempt to take and maintain the throne. If they have access to commonly appearing 'minions' or allies that will follow the would-be conquerer, they may bring them, but no more than four.
These are the things they must overcome:
1)Defeat three Shi'ar battle cruisers or convince them to surrender.
2)Fight the Imperial Guard, and at minimum survive. An actual win lets your chosen character skip the next one.
(Note: For a win, convincing them to surrender is all but impossible, but if you think someone could do it, that's a win.)
3)Escape the holding facility they're placed in, or convince someone to release them. The holding facility will negate 90% of their powers, so escape will likely have to be based on intelligence. If you think they can/would want to also free Deathbird, they'll have to do the next step.
4)Convince Deathbird to marry them/surrender the throne directly to them.
5)Declare themselves the emperor, defeating any who could lay the claim themselves.
6)Defeat Lilandra's forces, either personally or using their own armies.
So, who do you think would try and would succeed, who do you think would try and fail, who do you think would try and be an 'honorable mention'?