I'm going to pick one for every phase!
Underrated character:
Abomination (The Incredible Hulk)
Pepper Potts (Iron Man 3)
Ant-Man (Ant-Man)
Underrated film: The Incredible Hulk, Ant-Man, Doctor Strange
Underrated performance:
Tim Roth (The Incredible Hulk)
Zachary Levi (Thor: The Dark World)
Paul Rudd (Endgame)
Favorite shot: Avengers circle shot, We're the Guardians of the Galaxy bitch, Thor lands on Wakanda with Rocket and Groot
Favorite non-human character:
Thor (The Avengers)
Loki (Thor: The Dark World)
Thanos (Infinity War)
Favorite human supporting character:
Coulson (Iron Man, Thor, The Avengers)
Luis (Ant-Man)
MJ (Far From Home)
Favorite non-human supporting character:
Lady Sif (Thor)
Nebula (Guardians of the Galaxy)
Heimdall (Ragnarok)
Favorite character introduction (either in an individual film or the franchise):
Tony Stark (Iron Man) and Black Widow (Iron Man 2)
Star-Lord (Guardians of the Galaxy)
Peter Parker (Civil War)
Favorite entrance: Iron Man at the Stark Expo, Cap onto the ship, Thor with Rocket and Groot
Favorite line: "Take away the suit and what are you?" "Genius, billionaire, playboy, philanthropist."
"I imagine a suit around the world." "Sounds like a cold world Tony." "I've seen colder."
"I.. am inevitable." "And I.. am Iron Man."
Favorite gag: Tony Stark shocking Banner, a bunch of assholes standing in a circle, pretty much anything Ant-Man does
Favorite use of music: AC/DC - Shoot to Thrill (Iron Man 2), David Bowie - Moonage Daydream (Guardians of the Galaxy), Cat Stevens - Father and Son (GotGv2)
Biggest surprise: Tony Stark admits he's Iron Man, Groot dies, Black Widow dies
Favourite mid or post credits scene: Can't decide right now
Most emotional moment: Coulson dies, Peter Quill's mom dies, Tony Stark dies
Favourite fight: Cap and Iron Man vs Thor, elevator fight, airport fight
Favourite battle: Battle of New York, Battle for Xandar, Battle in Wakanda (Infinity War)
Favourite villain(s): Loki, Alexander Pierce, Vulture and Thanos (Infinity War)
Favourite twist: Black Widow being a hostage is actually her interrogation, SHIELD is Hydra, Vulture is Liz's father
Favourite pop culture reference:
Wizard of Oz (The Avengers)
Star Wars losing a hand in multiple phase two films
Aliens (Infinity War)
Favourite Stan Lee cameo: Thor, GOTG, GOTGv2
Favourite comic to screen shot/scene: Can't think of any
Favourite Trailer: The Avengers, Guardians of the Galaxy, Black Panther