Hercules

* Adam Warlock - Captain America tells about the story of Warlock in Avengers #263, both involved in Infinity War
* Angel - the reborn Jean Grey tells her story to Avengers, involving Angel (Fantastic 4 #286), later Hercules and Angel both members of Defenders
* Ant-Man - Hercules lives with the Avengers (from A #38), members of Avengers (#45-50). Nicknames (for Goliath): "Giant" (A #38), "Mountainous One" (#38, 40)
* Ares - brothers but enemies. Nickname: "Cowardly One" (Avengers #38)
* Attuma - *Enemy:* Attuma battles the Avengers (#272)
* Aurora - Alpha Flight and Avengers join forces against Beyonder (Secret Wars II.9) and Attuma (Avengers #272)
* Banshee - the reborn Jean Grey tells her story, involving Banshee (Fantastic 4 #286)
* Baron Zemo (Helmut) - *Enemy:* Masters of Evil invade the mansion of the Avengers (#274)
* Beast - the reborn Jean Grey tells her story to Avengers, involving Beast (Fantastic 4 #286), later Hercules and Beast are both members of Defenders
* Beta Ray Bill - they are among the throng of heroes that defeat the Dire Wraiths (ROM #65-66)
* Black Knight - they join forces to defeat Ares in the war of three worlds (A#100), later members of Avengers together
* Black Panther - they meet as Hercules visits the Avengers (Ka-Zar #1), and they join forces to defeat Ares in the war of three worlds (A#100)
* Black Widow - allied through Avengers (from #38) and members together later
* Boom-Boom - BB calls the Avengers to warn about The Beyonder (Secret Wars II.5)
* Box - they take part in the final battle against Beyonder (Secret Wars II.9)
* Bulldozer - *Enemy:* Wrecking Crew thrash Hercules into a deadlike coma in Avengers #274
* Cannonball - New Mutants attack all assembled heroes after becoming Beyonder's slaves (Secret Wars II.9), and they also clash South of Emma Frost's academy (NM #40), later Hercules comes to visit the New Mutants at the mansion (#81)
* Captain America - allies through Avengers (since A #38), members of Avengers (#45-48). Nickname: "Star-clad swain" (A #43)
* Captain Britain - he hears Wonder Man talking of Hercules in Excalibur #38
* Charles Xavier - the reborn Jean Grey tells her story, involving Charles (Fantastic 4 #286)
* Cloak - they take part in the final battle against Beyonder (Secret Wars II.9)
* Crystal - both members of Avengers
* Colossus - they are part of the mass of heroes that defeat the Dire Wraiths (ROM #65-66), and the final battle against Beyonder (Secret Wars II.9)
* Cyclops - the reborn Jean Grey tells her story, involving Cyclops (Fantastic 4 #286), later both are involved in Infinity War
* Dagger - they take part in the final battle against Beyonder (Secret Wars II.9)
* Daredevil - both are involved in Infinity War
* Doctor Doom - Kang tells the Avengers about Doom (Avengers #269)
* Doctor Strange - the whole lot of heroes gang up for a big fight against The Beyonder (Secret Wars II.5)
* Doug Ramsey - New Mutants attack all assembled heroes after becoming Beyonder's slaves (Secret Wars II.9), and they also clash South of Emma Frost's academy (NM #40), but later Hercules comes to visit the New Mutants at the mansion (#81)
* Dragon Man - *Enemy:* Hercules battles Dragon Man when he is controlled by Diablo (A #42). Nickname: "Mute Monstrousity" (A #42)
* Drax the Destroyer - both are involved in Infinity War
* Dum Dum Dugan - Dugan leads SHIELD troops in attack on the Avengers (X-Men #2.26)
* Edwin Jarvis - butler for Hercules in the Avengers mansion (from A #38)
* Emma Frost - Avengers discuss Emma Frost after she reports Magneto to the police (New Mutants #40)
* Enchantress *- Enemy:* she manipulates him against the Avengers (#38), and they battle over diamonds in Asia (An. #1) and later (#100)
* Executioner - *Enemy:* they battle over diamonds in Asia (Avengers An. #1). Nicknames: "Varlet", "Vainglorious One" and "Boastful One" (A An. #1)
* Falcon - members of Avengers
* Firelord - they battle but then join forces to defeat and exile Ego (Thor #225-228), later Firelord travels with the Avengers (#259). Nicknames: "My Hot-headed Friend" and "Fiery One" (Thor #225)
* Fixer - *Enemy:* Masters of Evil invade the mansion of the Avengers (#274)
* Franklin Richards - for a period, the FF lived with the Avengers
* Galactus - they join forces to defeat and exile Ego (Thor #225-228). Nicknames: "Vast One" (Thor #227), "Tall One" (#228)
* Gamora - both are involved in Infinity War
* Gargoyle - members of Defenders
* Havok - both are involved in Infinity War
* Hawkeye - Hercules lives with the Avengers (from A #38), members of Avengers (#45-50). Nicknames: "Impetuous One" (A #39, 43), "Reckless One" and "Archer" (#41)
* Heimdall - they briefly meet on the Rainbow Bridge (Thor #223)
* Hildegarde - they briefly meet in Odin's chambers (Thor #223)
* Hulk - *Enemy:* they clash after Hulk accidentally trashes Hercules' train to Hollywood (Tales to Astonish #79), and there was a battle where Hulk fough both Avengers and WCA (shown in Hulk #393) - *Ally*: in the battle against Beyonder (Secret Wars II.9) and in Infinity War. Nicknames: "Grotesque One" and "Witless Mortal" (TTA #79)
* Human Torch - Thor tells Hercules about the Fantastic Four, (Thor #226), later FF reside at Avengers Mansion for a while
* Iceman - the reborn Jean Grey tells her story to Avengers, involving Iceman (Fantastic 4 #286), later the two are both members of Defenders
* Immortus - they meet in the realm of Limbo in Avengers #269
* Iron Fist - they take part in the final battle against Beyonder (Secret Wars II.9)
* Iron-Man - Hercules lives with the Avengers (from A An. #1 - cA #46), also allies to defeat Ares (A #99-100). Nickname: "Iron-clad One" (A An. #1)
* Jean Grey - the Avengers unknowingly unearth Jean's cocoon (#263), and help her (FF #286)
* Julia Carpenter - join forces as they are in Avengers / WCA (e.g. in Bloodties)
* Kang - *Enemy:* arch enemy of Avengers (e.g. #267)
* Karma - New Mutants attack all assembled heroes after becoming Beyonder's slaves (Secret Wars II.9), and they also clash South of Emma Frost's academy (NM #40), but later Hercules comes to visit the New Mutants at the mansion (#81)
* Leader - *Enemy*: apparently Leader held Hercules hostage in Canada (Wolverine #144[retcon])
* Luke Cage - they take part in the final battle against Beyonder (Secret Wars II.9)
* Luna Maximoff - both are residents of Avengers Mansion
* Mad Thinker - *Enemy:* classic villain for the Avengers (from #39)
* Magik - New Mutants attack all assembled heroes after becoming Beyonder's slaves (Secret Wars II.9), and they also clash South of Emma Frost's academy (NM #40), but later Hercules comes to visit the New Mutants at the mansion (#81)
* Magma - New Mutants attack all assembled heroes after becoming Beyonder's slaves (Secret Wars II.9), and they also clash South of Emma Frost's academy (NM #40), but later Hercules comes to visit Magma at the X-Mansion (#81)
* Magneto - the Avengers discuss Magneto (A #263 and 265), they ally in the final battle against Beyonder (Secret Wars II.9), but clash South of Emma Frost's academy (New Mutants #40). Nicknames: "Base Villain", "Braggart" and "Vile Cur" (NM #40)
* Mandarin - *Enemy:* Avengers battle Mandarin on his giant space station (A An. #1)
* Meggan - she hears Wonder Man talking of Hercules in Excalibur #38
* Mirage - New Mutants attack all assembled heroes after becoming Beyonder's slaves (Secret Wars II.9), but later Hercules comes to visit the New Mutants at the mansion (NM #81)
* Mister Hyde - *Enemy:* Masters of Evil invade the mansion of the Avengers (#274)
* Mockingbird - they join forces against Hulk (shown in Hulk #393), the Dire Wraiths (ROM #65-66), and fights against The Beyonder (Secret Wars II.5, II.9)
* Monica Rambeau - members of Avengers together
* Moondragon - members of Defenders
* Moonstone - *Enemy:* Masters of Evil invade the mansion of the Avengers (#274)
* Nick Fury - Hawkeye mentions Fury at the hospital (Avengers #44), Fury gives the Avengers a video briefing (A An. #1), later Fury sends agents to attack the Avengers in Bloodties (X-Men #2.26)
* Nightcrawler - they are part of the mass of heroes that defeat the Dire Wraiths (ROM #65-66), and in the final battle against Beyonder (Secret Wars II.9)
* Northstar - Alpha Flight and Avengers join up against Beyonder (Secret Wars II.9) and Attuma (Avengers #272)
* Nova (Richard Rider) - Captain America mentions Nova took Avengers' Quinjet (New Warriors #26), soon both are involved in Infinity War
* Odin - Thor and later Enchantress mention Odin (Journey into Mystery An. #1, Avengers #38), and they briefly meet in Odin's chambers (Thor #223)
* Piledriver - *Enemy:* Wrecking Crew thrash Hercules into a deadlike coma in Avengers #274
* Polaris - both are involved in Infinity War
* Power Man - *Enemy:* Hawkeye mentions Power Man (Avengers #38), later Masters of Evil invade the mansion of the Avengers (#274)
* Puck - Alpha Flight and Avengers ally against Beyonder (Secret Wars II.9) and Attuma (Avengers #272)
* Quicksilver - Hercules lives with the Avengers (from A #38), members of Avengers (#45-48). Nicknames: "Swift One" (A #40), "Fleet One" (#43)
* Rachel Summers - Rachel summons all the heroes to finally end the Beyonder (Secret Wars II.9)
* Rage - Rage has visited the Avengers (New Warriors #26)
* Red Skull - *Enemy*: The Avengers become aware that Red Skull is terrorising the city (A #40), later they battle in subarctic Canada (#385-386)
* Reed Richards - Quicksilver first mentions Reed to Hercules (Avengers #42), and Thor mentions him as well (Thor #225), later FF resided at Avengers Mansion for a while
* Rick Jones - they ally through Avengers to defeat Ares (A #99-100), also are part of the mass of heroes that defeat the Dire Wraiths (ROM #65-66)
* Rogue - they are among the throng of heroes that defeat the Dire Wraiths (ROM #65-66), and in the final battle against Beyonder (Secret Wars II.9)
* Ronan *- Enemy:* they have done battle on the Kree homeworld (mentioned in Avengers Strikefile)
* Sabretooth - they are both captured and brought to Colosseum for Battletide (BT #1)
* Sasquatch - both are involved in Infinity War
* Scarlet Witch - Hercules lives with the Avengers (from A #38), members of Avengers (#45-48). Nicknames: "Fair Wanda" (A #4046), "Bewitching One" (#41, An. #1), "Beauteous Wanda" (#42)
* Sersi - both members of Avengers
* Shadowcat - they take part in the final battle against Beyonder (Secret Wars II.9)
* Shaman - Alpha Flight and Avengers ally against Beyonder (Secret Wars II.9) and Attuma (Avengers #272)
* She-Hulk - FF resided at Avengers Mansion for a while. They flirt (FF #286)
* Sif - they briefly meet in Odin's chambers (Thor #223)
* Silver Surfer - Thor tells Hercules about Silver Surfer being herald for Galactus (Thor #226), later both take part in the final battle against Beyonder (Secret Wars II.9)
* Snowbird - Alpha Flight and Avengers ally against Beyonder (Secret Wars II.9) and Attuma (Avengers #272)
* Spider-Man - they take part in the final battle against Beyonder (Secret Wars II.9) and in Infinity War
* Starfox - members of Avengers together (until #261)
* Storm - the reborn Jean Grey tells her story, involving Storm (Fantastic 4 #286), both are involved in Infinity War
* Strong Guy - both are involved in Infinity War
* Sub-Mariner *- Enemy:* Namor frequently battles the Avengers (e.g. #40) and Hercules (SM #29) - *Ally:* members of Avengers (#262-272). Nicknames: "Fish-fellow" (New Mutants #40). "Lord of Mollusk and Minnow" (SM #29)
* Sunspot - Hercules comes to visit the New Mutants at the mansion (NM #81)
* Susan Richards - Thor tells Hercules about the Fantastic Four (Thor #226), later FF reside at Avengers Mansion for a while
* Swordsman - they join forces against Ares and his war on three worlds (A #100)
* Talisman - they take part in the final battle against Beyonder (Secret Wars II.9)
* Thanos - Starfox tells him about Thanos in Avengers #259
* The Thing - Thor tells Hercules about the Fantastic Four (Thor #226), later they take part in the final battle against Beyonder (Secret Wars II.9) and in Infinity War
* The Watcher - Thor tells Hercules about the Watcher's role against Galactus (Thor #226)
* Thor - they have a legendary clash in Olympus (Journey into Mystery An. #1), again in Manhattan over the favors of Jane Foster (#125), Hercules then lives with the Avengers (from A An. #1 - cA #46), both members of Avengers. Nicknames: "Costumed Clod", "Arrogant One", "Golden Stranger" and "Brash One" (JIM An. #1), "Scion of Asgard" (Thor #126), "Mighty Thor" (#130), "Golden One" (#221), "Friend Asgardian" and "Blondhair" (#222)
* Thunderball - *Enemy:* Wrecking Crew thrash Hercules into a deadlike coma in Avengers #274
* Tiger Shark - *Enemy:* Masters of Evil invade the mansion of the Avengers (#274)
* Tigra - they join forces against Hulk (shown in Hulk #393), the Dire Wraiths (ROM #65-66), and big fights against The Beyonder (Secret Wars II.5, II.9)
* U. S. Agent - join forces as they are in Avengers / WCA (e.g. in Bloodties)
* Valkyrie - members of Defenders
* Vindicator - Alpha Flight and Avengers joined forces against Attuma (Avengers #272)
* Vision - they meet as Hercules visits the Avengers (Ka-Zar #1), allies to defeat Ares (A #99-100), later both members of Avengers
* Warlock - New Mutants attack all assembled heroes after becoming Beyonder's slaves (Secret Wars II.9), and they also clash South of Emma Frost's academy (NM #40), but later Hercules comes to visit the New Mutants at the mansion (#81)
* War Machine - join forces as they are in Avengers / WCA (e.g. in Bloodties)
* Wasp - Hercules lives with the Avengers (from A #38), members of Avengers (#45-50). Nickname: "Fair One" (A #45)
* Wolfsbane - New Mutants attack all assembled heroes after becoming Beyonder's slaves (Secret Wars II.9), and they also clash South of Emma Frost's academy (NM #40), but later Hercules comes to visit the New Mutants at the mansion (#81)
* Wolverine - apparently they met in Canada when Wolverine was Department H (retcon in W #144), later they are among the throng of heroes that defeat the Dire Wraiths (ROM #65-66), and in the final battle against Beyonder (Secret Wars II.9)
* Wonder Man - they join forces against Hulk (shown in Hulk #393), the Dire Wraiths (ROM #65-66), and big fights against The Beyonder (Secret Wars II.5, II.9)
* Wrecker - *Enemy:* Wrecking Crew thrash Hercules into a deadlike coma in Avengers #274
* Zeus - his father. Nicknames: "Supreme One" (Journey into Mystery An. #1, #124), "Venerable Lord" (#124), "Honored Father" (Avengers #50)