Theory #1: I have seen no one in this sub theorised about this but maybe I'll be the first. I believe that once the secret agent made an agreement with scientist to exchange information with technologies from the alliance to him. Essentially the scientist gives information about the Astros and their past in exchange for technologies and the weakness of the alliance, this can be supported by the fact the skibidis have the book of the tv men in possession and how secret agent knows the upcoming threat of the Astros beforehand. However scientist didn't fully trusted him, he only agreed to the deal for the technologies and weaknesses and digged up the past of secret agent slowly (since he might have possibly worked at alpha hills before, it would be easier to find evidences of his past) and found something he shouldn't have and the secret agent caught up to his act and leads to him killing off scientist 

Theory #2: there could be more traitors inside the union faction (talking about secret agent’s subordinates). Like Lucky cam, there could be more of his subordinates spying on the faction and giving information to secret agent. There could also be a tv men spy and could possibly be the reason the skibidi toilets were able to possess the book of tvmen’s by giving it to secret agent and giving it to scientist. Some of his subordinates can morph into anything, including a hardware body which makes it the perfect tool for spying and that some are brainwashed and can make physical contact unlike shapeshifters and have better chances of their cover not being blown up

Theory #3: If UTCM is in the hands of secret agent, there is a high probability he is going to brainwashed him and make him his subordinates. The fact that he helped him in 74 and could have possibly disconnected the communication between the squad and ufo and defeated the squad chasing UTCM could mean he has something to do with him and is probably repairing him for a mission 

Theory #4: The guy who convinced the alliance to teamup and tried to do peace talks to the Astros might have actually worked with secret agent in the past in the alpha hills (guy who shaked hands with secret agent on the poster), idk they looked similar enough but if it's true that it's him, he could play a pivotal role in finding out who secret agent really is and maybe learn his true intentions 

Thoughts guys?

Theories regarding about Secret agent