It begins with a civil war between the Avengers, who are joined by Bucky Barnes (first seen in Phase One and Phase Two), Scott Lang, T'Challa, and Peter Parker. Phase Three brings back every central character of Phase One and Phase Two. This Phase also introduces the Guardians of the Galaxy, which include Peter Quill, Gamora, Rocket, Groot, and Drax, as well as Scott Lang. Phase Two centers on the six original Avengers and Fury once again, along with new Avengers James Rhodes (first seen in Phase One), Sam Wilson, Wanda Maximoff, and the Vision. agent who participates in many events of Fury's Big Week and Loki, Thor's adoptive brother whose plans to achieve world domination prompt Fury to assemble the Avengers. and creator of the Avengers Phil Coulson, a high-ranking S.H.I.E.L.D. Other central characters include Nick Fury, leader of S.H.I.E.L.D. Phase One is centered on six individuals who become the Avengers- Tony Stark, Steve Rogers, Thor, Bruce Banner, Natasha Romanoff, and Clint Barton. The first three phases are known as "The Infinity Saga", and are followed by Phase Four.
The film and television series of the Marvel Cinematic Universe (MCU) feature numerous central characters across its phases. (top, L to R) Chris Pratt, Zoe Saldana, Dave Bautista, (bottom, L to R) Vin Diesel, and Bradley Cooper, portray the first five Guardians of the Galaxy in the MCU and play a central role in the films. 3.5 Introduced in Marvel Television series.2.90 John Walker / Captain America / U.S.2.59 Peter Parker / Spider-Man / "Peter-Three".2.58 Peter Parker / Spider-Man / "Peter-Two".2.52 N'Jadaka / Erik "Killmonger" Stevens.2.8 Sharon Carter / Agent 13 / Power Broker.1.2 Bucky Barnes / Winter Soldier / White Wolf.