Who is he?
Master of the winds, who gives Ody and co a bag containing the winds to see them home. The sailors open the bag looking for gold, end up twatted in the face with a massive storm. GOOD ONE, IDIOTS.

Who Warner Brothers Will Want: Jim Carrey
There’s scope for a bit of mischievous god-style relief, so the obvious call would go out to Hollywood’s king of stretched grin.
 
Who We Want: Andy Serkis
Give it a bit of edge – Aeolus switches from kindly patron to disinterested super-being at the drop of a hat (or, rather, the opening of a magical bag), which Serkis can do spinning on his metaphorical compass.