6. Beta Ray Bill

In the trailer for this movie there is a spaceship. Now, although there is absolutely no hint of a Beta Ray Bill appearance in
Thor: The Dark World, it's not too far-fetched to think it may happen and take us all by surprise. In the comics, Bill is a genetically modified Korbinite from the Burning Galaxy who proves worthy enough to wield Mjolnir (something very few characters can say) and is ultimately granted his own Asgardian weapon - a war hammer similar to Mjolnir named 'Stormbreaker'. He pilots a spaceship called 'Scuttlebutt' which isn't too dissimilar to the spaceship in the trailer and, as far as his potential appearance in the Marvel cinematic universe goes, we can dream can't we? Having the equally-powered Bill fighting alongside Thor on screen would be a sight to behold and one I'm sure we would all enjoy as viewers.