Warning: this post contains spoilers for “The Suicide Squad”There have been a number of actors who have popped up in movies based on both Marvel and DC Comics properties, and “The Suicide Squad” has a couple of its own to add to the list: David Dastmalchian, who was also in “Ant-Man and The Wasp,” as well as a surprise cameo appearance by someone director James Gunn brought over from his “Guardians of the Galaxy” movies.Director James Gunn made an appearance on the latest episode of the Happy