Looks like Killjoys' Hannah John-Kamen landed a pretty big role in Ant-Man and The Wasp. Wonder who she'll be?
Most popular theories so far: Monica Rambeau or the new Beetle.
My (far-fetched wishing on a star theory): Jessica Drew. I got there based on the role she currently plays and the fact that Hydra was name dropped in the first Ant-Man. I figure it may play a part in the second? Who knows.