During the trip to Black Rock Loki got his first taste of being forced to go on a mission. This was not okay with him. He passionately hates feeling like anyone or anything has power over him, it makes him feel trapped. And how dare the Initiative drag him away anyway!? He is a god! What kind of abominations are they!?
With those dark thoughts, Loki will be burning with a desire to get his revenge. But he's the Trickster, he doesn't do his own legwork, so he'll be building a team to get revenge for him.
His plan is to locate people who do not seem to like or trust the Initiative and manipulate events around them so that they will meet up and, he hopes, form a hidden alliance that he can eventually use to avenge
himself. His hand in the group's creation will be a hidden one and he is not likely to show himself or reveal his involvement until the project's inevitable failure.
This is not a revolution plot. Not at the start anyway. This will be a slow-boiling sub plot and the group's apparent purpose could be anything. Anyone who does not trust the Initiative can be involved in this. Use it to get new CR! I would love for people to have fun with it.
Notice: Since it will secretly be Loki's project, this means he is likely to use scrying magic to watch the group and the people involved in it. He will want to observe his chosen champions. He will only interfere if he feels like he is in danger of losing control of the situation, otherwise everyone in the group and the group itself are free to do as they please. (People are obviously welcome to request that he not see certain things their characters do. He is not all-knowing.)
This is all still in the planning stages so feel free to ask questions, etc. Also let me know if you think this is just an all around terrible idea.