War Machine

Colonel James "Rhodey" Rhodes is a major character in the Marvel Cinematic Universe. He is Tony Stark's best friend and wears a repurposed and weaponized Iron Man armor known as the War Machine armor.

How Iron Man 3 Should Have Ended
At the Super Café, Batman questions why the Iron Patriot armor does not work for President Ellis, but does when Rhodey dons it. In a post-credits scene, Rhodey watches in shock as Trevor Slattery narrates a Mandarin's Margarines commercial.

How Avengers: Age of Ultron Should Have Ended
Rhodey is first seen at Stark's party as Ultron uploads his soul in various robot bodies. Later, Rhodey attempts to summon the War Machine armor, but it does not work.

How Captain America: Civil War Should Have Ended
Rhodey is first seen meeting General Ross and agrees with the Avengers that despite their mass destruction, they save the Earth. He is later seen with Team Iron Man as Spider-Man webs up Team Cap.

After being shot by the Vision, Rhodey falls to the ground. When Tony tries to get Rhodey's vitals, he learns to his anguish that Rhodey has died.

Rhodey later joins Team Iron Man at the Super Café and joins them in singing Cap's theme.

Hulk Spoils Movies
Rhodey and Hulk are seen being interviewed at the D23 Expo. However, Hulk spoils the ending of Avengers: Infinity War and various other movies to Rhodey's chagrin, culminating with Rhodey cancelling the interview before Hulk could spoil Spider-Man: Homecoming.

How Spider-Man: Homecoming Should Have Ended
Rhodey arrives at the Super Café and calls out Tony for replacing him with Spider-Man, especially since Tony put a parachute in the Spider-Man suit but not the War Machine armor.

How Avengers: Infinity War Should Have Ended
Rhodey joins the Avengers and Guardians at the Super Café and reminisces about past events, with Rhodey recalling how he got paralyzed during the Civil War.

Trivia

 * Rhodey was played by Terrence Howard in Iron Man before Don Cheadle took over from Iron Man 2 onwards.
 * This is referenced in the Infinity War HISHE, where Natasha Romanoff recalls how Rhodey once had a different face.
 * As of "Hulk Spoils Movies," Rhodey has not at the time watched all the Harry Potter films (although he implies that he has just started watching at least Sorcerer's Stone) and Star Wars Episode VII: The Force Awakens.