Marvel Avengers Alliance Heroes to Deploy for Epic Weapon Drops Guide
Marvel Avengers Alliance Heroes to Deploy for Epic Weapon Drops Guide by zeitgeistf
Elektra (Chapt 2-3, deploy Black Cat)
Epic Drop: Grecian Sai – counter and bleed effect
Magneto (Chapt 4-4, deploy Storm)
Epic Drop: Magnetic Field Generator – creates shields and when the shields are removed the ally gains an extra turn
Dr. Doom (Chapt 3-5 , deploy Spiderman)
Epic Drop: The Doombringer – Debuff an enemy and raise your agents stats
Loki (Chapt 5-3, deploy Wolverine)
Epic Drop: Norn Stone – Increase all the agents’s stats
New Epic boss at Chapter 6 Mission 3 Doc Ock (deploy Black Widow)
Epic Drop: can’t remember the name of that blasted Ock Tentacle. Its power is similar to Storm’s Lightning.
You can also just deploy Hawkeye anytime when a hero deploy is required to be able to fight Dr. Doom.
Don't know if this still applies in the recent update. :))