Loki (Earth-614)

Loki is a playable character in Marvel: Civil War and Marvel: Infinity War. He is Thor's nemesis and brother adopted by Odin. He is a secondary antagonist in Infinity War.

Marvel: Civil War
While Black Panther of Earth-616 was in Earth-614, Loki teleported him to Wakanda and revealed Iron Man's intention of having the Wakandans invade New York.

Ending
After Iron Man was defeated, Captain America's team worked on rebuilding and reunited the Avengers. Loki created a time loop that started with the arrival of the Earth-616 heroes and ending just before their victory. This pocket of time, allowed Loki to plan his next move.

Ending
After defeating Thanos, Loki took the Infinity Gauntlet and intends to take over the universe.