Get a Free 3-6 Star Baron Zemo this Week!
Log in to the Summoner's Market at https://store.playcontestofchampions.com/ and claim the Baron Zemo Selector between 10am PT November 24 and 10am PT on December 1st.
Proven and Below: 3-Star
Conqueror/Uncollected: 4-Star
Cavalier/Thronebreaker: 5-Star
Paragon/Valiant: 6-Star
You can only claim this Baron Zemo one time. The Baron Zemo is delivered as a selector, claiming it will require you to choose your rarity immediately. If you plan to change your Progression level during the Cyber Week event, we suggest you wait until you have made that change before claiming this selector.
Log in to the Summoner's Market at https://store.playcontestofchampions.com/ and claim the Baron Zemo Selector between 10am PT November 24 and 10am PT on December 1st.
Proven and Below: 3-Star
Conqueror/Uncollected: 4-Star
Cavalier/Thronebreaker: 5-Star
Paragon/Valiant: 6-Star
You can only claim this Baron Zemo one time. The Baron Zemo is delivered as a selector, claiming it will require you to choose your rarity immediately. If you plan to change your Progression level during the Cyber Week event, we suggest you wait until you have made that change before claiming this selector.
Who to R3

Comments
Hulk isn't a bad option either. He hits hard, is a bit of a tank and is poison immune which helps in AW (my 4* is unduped R4).
Never really used Winter Soldier. His power control is unreliable, but has good bleed with his specials. Hawkeye is better in both regards.
Iron Fist isn't horrible, but he doesn't have the power output that he once had since the 12.0 upgrade. As a 5*, I wouldn't consider him for anything above R2.