Fan Casting Vernon Van Dyne in Ant-Man and the Wasp (w/Hank and Janet)

Vernon makes his first actual appearance in the MCU (not counting the nightmare vision in Age of Ultron). He is introduced by watching a news report of his daughter's involvement in the Avengers Civil War which makes Vernon worried about her so he eventually meets her at one point and is very angry about what she's done since she left him. By the end of the film, Vernon reconciles with Janet and is fully supportive of her job as a superhero.