Over the years, Adam Warlock and Doctor Strange have teamed up and fought each other on numerous occasions. One memorable showdown that takes place between The Infinity Gauntlet and Infinity Watch pits Warlock's Gauntlet against Doctor Strange's relics and talismans.
The seeds of this showdown were sewn years earlier: in 1963, a short called "Dr. Strange Master of Black Magic!" in the horror anthology Strange Tales #110 introduced readers to a "rushed" version of Stan Lee and Steve Ditko's Doctor Strange. Marvel's most explicitly magical superhero, Strange crosses planes of existence and wields exotic magic to reshape reality. In the early 1970s, writers such as Steve Englehart flung the character headlong into the ethereal unknown, priming him for inevitable meetings of the minds with Marvel's other cosmic warlock.
In Invincible Hulk Annual #6, it's revealed that their fates are inextricably linked by Ayesha, a.k.a. Kismet, a.k.a. Her. Doctor Strange was tricked into performing an operation in the Beehive, which, in a roundabout way, led to the creation of Ayesha, "Her" to Warlock's "Him." Given that neither Strange nor the Hulk were part of the Adam Warlock origin glimpsed in the closing moments of Guardians of the Galaxy Vol. 2, we're betting it'll be some time before we see "Her" in the Marvel Cinematic Universe.