Such as why Loki would want to go after Iron Man?
Picking up off of the Avengers. Iron Man was the one who ended the Chutari (?) invasion with that nuclear missile. Loki is now in some serious trouble with The Other. By default, Loki swears revenge on Iron Man.
Some ways are: 1. Because Iron Man stopped the Chitauri invasion by throwing the missile into the Chitauri ship Loki would've presumably gotten into big trouble with Thanos. So Loki swears revenge on Iron Man. 2. Because Iron Man mocked Loki in the Avengers (when Loki and Tony were in Stark Industries) hurting his 'ego' he could want revenge on him for that. 3. Iron Man could mock Loki for failing to take over the earth causing Loki to want revenge on Iron Man. 4. Iron Man could bring into a conversation how Loki got his *** kicked by the Hulk which would cause Loki to attack him and for them to engage into a battle. 5. He could take him hostage and force him to create a weapon to take over Earth/Asgard. (Much like in the movie Iron Man) So those are the ones I can think of now. I'll edit later if I think of anything else :)
Iron Man *mocked* Loki, joking about his performance issues. gods don't forget stuff like that. even Hulk only bruised Loki's body. Iron Man bruised Loki's *ego*.
