While not as popular as most actors, Matt Gerald is an American actor and screenwriter born in Florida who recently did roles in films like Terminator 3, Avatar, Red Dawn, and GI Joe Retaliation and has recently appeared as a prisoner in the Marvel One Shot All Hail the King.
In the one shot his character was named White Power Dave and if he does reprise his role as that same character, then there is a slight chance that his character in the Ant Man film, then his character might become the super villain
Whirlwind
The thing is Whirlwind's real name is David Cannon and White Power Dave's real name is Dave so if Gerald is reprising his role as the character from the one shot to the Ant Man film, then the one shot maybe a prologue to the Ant Man movie as well as Iron Man 4.
But if Matt Gerald's character in Ant Man isn't the same one from All Hail the King, then this could be a slight problem for other Marvel Cinematic films.
Anyway if Matt Gerald is cast as Whirlwind for Ant Man, he will be one serious bad guy for the hero to take on. Until then, we shall stay tuned until the actor's role has been officially confirmed.