*** Possible Spoilers for Ant-Man ***
If you watched the red carpet world premier of Ant-Man on Marvel.com, you got to see actor Martin Donovan interviewed where he skated around identifying his role. He did say that you would have to look up his character once you found out who it is… well, a few minutes later when the cast was introduced, Donovan was said to be playing the role of Mitchell Carson… so I looked it up.
Mitch Carson in the comics is a S.H.I.E.L.D. agent who was chosen to wear a new Ant-Man suit before it was taken by Chris McCarthy and later ended up in the hands of Eric O'Grady, the third Ant-Man. Carson was determined to get the suit back. At one point Carson's face is severely burned in a fight with O'Grady. Then, using an older version of the Ant-Man suit, he captured the new Ant-Man and began torturing him. During this time Carson admitted to killing his own father when he was 15 years old. Iron Man intervened and captured Carson, sending him to jail.
How much, if any, of the comic backstory will come into play remains to be seen. They may just be name checking him for fans. But the fact they didn't put his name on IMDB or want him to talk about it says that it may mean something more.
Ant-Man opens July 17th.