Episode 4-6, "About Face" (aired July 18, 2012): Hank boards Boris' helicopter, but just before he does the helicopter is shown in a wide shot with no one nearby. Hank boards and a guard closes the door from the exterior. Seconds later the helicopter takes off and a wide shot shows no one on the ground. The guard appears out of nowhere and then vanishes.
Evan was originally written as Hank's best friend. But when Paulo Costanzo was cast, his physical resemblance to Mark Feuerstein inspired Andrew Lenchewski to turn the characters into brothers.