Infinity Wars #1Gerry Duggan, Mike Deodato Jr.Infinity Wars, book 2

Characters in Infinity Wars #1

3 characters, main characters first.

Antagonists

Requiem
Masked figure hunting and killing the bearers of the Infinity Stones; the issue's central mystery.
Also in Infinity Wars #2, Infinity Wars #4, Infinity Wars, Infinity Warps

Supporting characters

Captain Marvel (Carol Danvers)
Powerful Avenger drawn into the front lines of the war for the Stones.
Doctor Strange
Sorcerer Supreme and member of the Infinity Watch.