Mephisto

* Abomination - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Absorbing Man - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Alicia Masters - Mephisto impersonates her to trick The Thing (Secret Wars II.7)
* Balder - *Enemy*: Mephisto captures and enslaves the Asgardians in his realm (Thor #205)
* Baron Mordo - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Batroc - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Blastaar - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Cloak - *Enemy:* they battle in Mephisto's lair (Cloak and Dagger #3.18). Nickname: "Darkling" (#3.18)
* Dagger - *Enemy:* they battle in Mephisto's lair (Cloak and Dagger #3.18)
* Death - Mephisto tells a story of Death and the Flying Dutchman (Silver Surfer #8), later they have a romantic relationship, and plot against Beyonder (Secret Wars II.7)
* Doctor Doom - Mephisto holds the sould of Doom's mother (Secret Wars #10), but Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Doctor Octopus - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Dum Dum Dugan - *Enemy*: Mephisto manipulates the SHIELD agents in his plan against Silver Surfer (SS #17)
* Electro - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Emma Frost - Mephisto recruits her to fight against The Beyonder (Secret Wars II.7)
* Fandral - *Enemy*: they battle when Mephisto is holding Thor captive (Thor #181), later Mephisto captures and enslaves the Asgardians in his realm (#205)
* Galactus - Mephisto discusses Galactus with Silver Surfer (SS #16)
* Ghost Rider (DK) - *Enemy:* they battle in Mephisto's lair (Cloak and Dagger #3.18). Nickname: "Pretender" (#3.18)
* Ghost Rider (JB) - Mephisto creates him (GR #1)
* Hildegarde - *Enemy*: Mephisto captures and enslaves the Asgardians in his realm (Thor #205)
* Hobgoblin - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Hogun - *Enemy*: they battle when Mephisto is holding Thor captive (Thor #181), later Mephisto captures and enslaves the Asgardians in his realm (#205)
* Juggernaut - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Kang - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Kraven the Hunter - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Living Laser - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Loki - they are distanced allies when Loki has swapped body with Thor (Thor #180-181)
* Mole Man - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Nick Fury - *Enemy*: Mephisto manipulates Fury and the SHIELD agents in his plan against Silver Surfer (SS #17)
* Odin - from battles with Thor, Mephisto must be aware of the powers of Odin (Thor #181, 205)
* Rhino - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Sif - *Enemy*: they battle when Mephisto is holding Thor captive (Thor #181), later Mephisto captures and enslaves the Asgardians in his realm (#205)
* Silver Surfer - *Enemy*: archenemy (since SS #3)
* Spider-Man - *Enemy:* they battle in Mephisto's lair (Cloak and Dagger #3.18)
* Susan Richards - Mephisto impersonates her to trick The Thing (Secret Wars II.7)
* Thanos - they are awkward allies during the Infinity Gauntlet event (Cloak and Dagger #3.18). Nickname: "Gem-holder" (C&D #3.18)
* The Thing - Mephisto tricks The Thing into fighting the Beyonder (Secret Wars #2.7)
* The Watcher - Uatu confronts Death with The Beyonder (Secret Wars II.6)
* Thor - *Enemy*: Odin mistakenly sends Thor into the realm of Mephisto, where they battle (Thor #180-181), later Thor repeats his victory to free his fellow Asgardians (#205). Nickname: "My ubiquitous Foe" (Thor #205)
* Titania - Mephisto recruits her to fight against The Beyonder (Secret Wars II.7)
* Vanisher - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Volstagg - *Enemy*: they battle when Mephisto is holding Thor captive (Thor #181), later Mephisto captures and enslaves the Asgardians in his realm (#205)
* Vulture - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Wizard - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)
* Wrecker - Mephisto recruits him to fight against The Beyonder (Secret Wars II.7)