In the black widow trailer you saw a scene with yelena on a table strapped down to a operating table and if you look closely at the scene you can see a table with the words AIM (Advanced idea mechanics) on it the table if you remember all the way back in Ironman 3 that is the company Aldridge Killian worked for in the movie so they have been in the MCU of a while but MODOK is a big part of AIM he is even the leader of the group it would make sense because Remember back in Antman and the Wasp the mysteriously benefactor that was going to buy tech from Sonny Berch that could have been AIM buying tech for MODOK then a new superhero stature aka Casie Lang could be trying to take AIM down and needs help from here dad and Wasp
