Fan Casting Post-Credit Scene in Ant-Man and the Wasp: READY! A.I.M! FIRE!

Post-Credit Scene: Hank wakes up in the middle of the night, before making his way down to the lab. He begins working on Ultron, believing that if it were operational, Darren would still be alive today. He then maps his own brain waves onto Ultron, since they wanted to make it more human.