Red Skull, later named Iron Skull and much later Cosmic Skull, is the arch-nemesis of Captain America. He is a major antagonist in the TV series Avengers Assemble and revealed to be a servant of Thanos.

He is voiced by Liam O'Brien.

Biography

Early life

Johann Schmidt is the leader of Hydra, a terrorist group derived from the Nazis. He was powered by an early and unstable version of the Super-Soldier Serum, and adopted the identity of Red Skull.

Since then, he has battled Captain America and his fellow heroes for years, without ever achieve his goals of global domination.

The Avengers Protocol, Part 1

Dying from his failing Super-Soldier Serum, Red Skull asked help from M.O.D.O.C. in order to transfer his mind into Captain America's body, so that he could retain his powers since the serum successfully bonded with that body without it killing him.

Red Skull had a bunch of Hydra minions attack Captain America, he managed to imprison and teleport him, but was attacked by Iron Man who thought he witnessed  Cap's death. He subsequently reassembled the Avengers and attacked the Hydra base with great haste. Red Skull had managed to take place in Cap's body, but the process was inverted, only for M.O.D.O.C. to rip the Iron Man Armor and the Arc Reactor from Tony Stark and transfer them to Red Skull, who then dubs himself the Iron Skull. The two villains then are forced to retreat, with Stark left for dead.

The Avengers Protocol, Part 2

In order to achieve his dream of world domination and victory over the Avengers, Iron Skull wanted to destroy their members, resources and ultimately public image. He infiltrated the Avengers Mansion where he planted a bomb on the mansion reactor, and infected the Avengers with microbots sending aggressiveness stimulation's, making them battle each others in front of the civilians and media. Stark managed to nullify the microbots actions using concentrated EMP beams, and rallied the team around his lead to defeat and force to retreat Iron Skull.

Angered by his failure, Skull called to the Avengers' old foes, Doctor Doom, Dracula and Attuma, to join him in his Cabal, as an evil counterpart to the Avengers. Those communications were also caught by Stark and his teammates, who were now perfectly aware that Skull would seek for revenge.

The Serpent of Doom

The Iron Skull tries to contact Doctor Doom again to recruit him to his Cabal but Doom once again refuses, which led Doom to be an enemy of the Cabal, as a result.

Blood Feud

Red Skull contacts Dracula telling him of the properties of the Super-Soldier Serum which leads to a fight with the Avengers. In his defeat the Skull visits him at Castle Dracula and offered him a position in the Cabal.

Hyperion and Attuma

The rest of the Cabal finally forms, with Attuma deciding joining them. They tried to destroy the Avengers, by using their own battle methods against them. They failed, but succeeded at one part of their plans to rescue Hyperion from S.H.I.E.L.D., and have him join the Cabal. Together, they attempted to kill Doom and steal the Tesseract, as of which they succeeded partially as they had retrieved the Cosmic Cube.

Betrayal and brief career as the Cosmic Skull

The Skull with the Cosmic Cube in his possession was planing to rule all dimensions, but ended up betraying the Cabal and being humiliated by the Avengers. He briefly became the Cosmic Skull, but  due to M.O.D.O.C., the rest of the Cabal and Tony, he was seperated from the Cosmic Cube and was then flung into another dimension, where he met his true boss, Thanos.

Escape from Thanos

The Red Skull betrayed Thanos and was able to escape back to Earth. Unfortunately, he was followed by Thanos' droids, and ultimately crashed in Brazil. The Avengers investigated the scene, and found a mentally-unbalanced Red Skull with a Infinity Stone, which he had stolen from the Mad Titan. He was then imprisoned by the Avengers to get more information about Thanos to little to no avail. When Black Widow and Hawkeye interrogated him, his only response to them was that "He would rise".

The Avengers used the carvings that the Red Skull made in his cell to locate another one of  the Infinity Stones, the Time Stone. The arrival of said stone create temporal anomalies, like the appearance of dinosaurs, robots from the future, or Hydra battalions from WWII which wrecked havoc in Manhattan. In the middle of the chaos, the Red Skull escaped his cell, and tried to get the Time Stone, which had been attached to Tony Stark's arc reactor, and caused him to continually de-age to the point of being a child.

Once the Red Skull got hold of a kid Tony Stark, a pulse from the Time Stone barely de-aged the Red Skull and  reverting his mind to a normal state. Captain America fought the Red Skull to save Tony, who soon managed to put on an adjusted Iron Man armor for his young body. Tony attacked the Red Skull with a repulsor ray which blasted the villain out of the tower. Red Skull was then caught by one of the pterodactyls which had been brought to the present by the stone, defeating him, but ultimately ruining their chances of getting information on how to stop Thanos.

Powers and Abilities

Powers

Superhuman strength, reflexes, stamina, agility, and a hyper-accelerated healing factor on a similar level to Captain America. He also seems to no longer age since he was injected with the serum that gave him his powers. 

Formerly when fused with the Cosmic Cube, dubbed  the Cosmic Skull he had many God-like powers like flight, near invulnerability, even faster healing, enhanced strength, speed, reflexes, cosmic energy manipulation, projection and teleportation

Abilities

Genius level intelligence and a skilled leader

Weaknesses

Supersoldier serum the Red Skull took was inperfect and it weakened him after decades. But after bonding with the tesseract & tesseract instantly "healed" his super soldier serum 

He's very arrogant and often underestimates his enemies and his social abilities in making alliances are fairly limited.

Formerly the Red Skull had became insane after working with Thanos, he was also reliant on stolen one of Iron Man Armor's to maintain life.

Episodes and Appearances

Appearances on The Show

Avengers Assemble

Season 1

Season 2

Season 4: Secret Wars

Hulk and the Agents of S.M.A.S.H.

Season 2

Ultimate Spider-Man

Season 3: Web-Warriors

Navigation

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Television
The Avengers: United They Stand: Ultron | Kang the Conqueror | Swordsman | Ringmaster | Masters of Evil (Baron Zemo & Whirlwind) | Attuma | Zodiac (Taurus & Scorpio) | Egghead | Scarlet Witch | Grim Reaper
The Super Hero Squad Show: Doctor Doom | Mole Man | Fin Fang Foom | Abomination | Wrecker | Thunderball | Piledriver | M.O.D.O.K. | Klaw | Toad | Melter | Dormammu | Sabretooth | Juggernaut | Pyro | Whirlwind | Zzzax | Enchantress | Baron Mordo | Punisher | Egghead | Ringmaster | Skrulls (Super-Skrull) | Trapster | Mystique | Impossible Man | The Leader | Mad Thinker | Skurge | Crimson Dynamo | Batroc the Leaper | Loki Laufeyson | Magneto | Quicksilver | Scarlet Witch | HYDRA (Red Skull , Arnim Zola & Baron Wolfgang von Strucker) | Galactus | Terrax the Tamer | Firelord | Stardust | Thanos | Kree | Ego the Living Planet | Grandmaster | Annihilus | Nebula | Ronan the Accuser | Nightmare | Ultron | Dark Surfer | Sentinels | Dracula | High Evolutionary
Avengers: Earth's Mightiest Heroes: HYDRA (Red Skull, Baron Von Strucker, Grim Reaper, Arnim Zola, Doughboy & Madame Viper) | Masters of Evil (Baron Zemo, Enchantress, Skurge, Chemistro, Abomination, Crimson Dynamo & Grey Gargoyle) | A.I.M. (M.O.D.O.K.) | Kree Empire (Supreme Intelligence, Colonel Yon-Rogg & Ronan the Accuser) | Absorbing Man | Klaw | Ultron | Wrecker | Thunderball | Piledriver | Red Hulk | Frost Giants (Loki Laufeyson & Ymir) | Technovore | Bi-Beast | The Leader | Whirlwind | Kang the Conqueror | Man-Ape | Malice | Mad Thinker | Mandrill | Graviton | Fenris Wolf | Lucia Von Bardas | Zzzax | Blizzard | Constrictor | Griffin | Living Laser | Whiplash | King Cobra | Magneto | Wendigo | Skrulls (Super-Skrull) | Malekith the Accursed | Hela | Doctor Doom | Surtur | Glenn Talbot | Winter Soldier | J. Jonah Jameson | Destroyer | Annihilus | Purple Man | Galactus | Firelord | Stardust | Terrax the Tamer
Avengers Assemble: HYDRA/A.I.M. (Red Skull, M.O.D.O.K., Blood Brothers, Grim Reaper, Crossbones & Baron Wolfgang von Strucker) | Doctor Doom | Ulik | Dracula | Hyperion | Wrecker | Thunderball | Piledriver | Destroyer | Loki Laufeyson | Chitauri | Justin Hammer | Mojo | Galactus | Ringmaster | Black Order (Thanos) | Hela | Winter Soldier | Nighthawk | Dormammu | Ultron | Roxxon Energy Corporation | Absorbing Man | Titania | Whirlwind | Fin Fang Foom | Masters of Evil (Baron Zemo, Beetle & Goliath) | Klaw | Ghost | A.I.M. (Kang the Conqueror, Whiplash & Spymaster) | Abomination | Kree Empire | Egghead | The Leader | Crimson Widow | Typhoid Mary | Ares | Taskmaster | Doughboy | Ulik | Symbiotes | Morgan le Fey | Tiger Shark | Erik Killmonger | Man-Ape | Madame Masque | Kraven the Hunter | Vulture

Movies
Ultimate Avengers 1 & 2: Herr Kleiser | Chitauri
Next Avengers: Heroes of Tomorrow: Ultron
The Avengers: Loki Laufeyson | Chitauri (The Other & Leviathans) | HYDRA (Gideon Malick & Jasper Sitwell) | Georgi Luchkov | Thanos
Avengers: Age of Ultron: Ultron | Ultron Sentinels | HYDRA (Wolfgang von Strucker, List, Scarlet Witch & Quicksilver) | Ulysses Klaue | Madame B | Chitauri (Leviathans) | Thanos
Avengers: Infinity War: Black Order (Thanos, Ebony Maw, Proxima Midnight, Corvus Glaive, Cull Obsidian, Nebula, Outriders, Chitauri & Leviathans) | Red Skull | The Collector | Loki Laufeyson | Winter Soldier | M'Baku | Scarlet Witch | Thunderbolt Ross
Avengers: Endgame: Black Order (Thanos, Ebony Maw, Proxima Midnight, Corvus Glaive, Cull Obsidian, Nebula, Outriders, Sakaaran Mercenaries, Chitauri, Leviathans & Chitauri Gorillas) | HYDRA/STRIKE (Red Skull, Alexander Pierce, Crossbones, Jasper Sitwell & Jack Rollins) | Loki Laufeyson | Winter Soldier | M'Baku | Scarlet Witch | Kraglin Obfonteri | Dark Elves | Thunderbolt Ross | Akihiko

Video Games
Marvel's Avengers: M.O.D.O.K. | Monica Rappaccinni | Abomination | Taskmaster | Super-Adaptoid | Lyle Getz

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Comics
Abomination | Abominatrix | Absorbing Man | A.I.M. | Apocalypse | Arcade | Arkon | Arnim Zola | Attuma | Avalanche | Bi-Beast | Blastaar | Boomerang | Brian Banner | Captain Axis | Captain Omen | Chameleon | Collector | Constrictor | Corruptor | Crossbones | D'Spayre | Deadpool | Destroyer | Devil Hulk | Doctor Doom | Doctor Octopus | Doctor Scarabeus | Enchantress | Enclave | Executioner | Fixer | Flux | Fragment | Freedom Force | Frightful Four | Frost | Frost Giants | Galactus | General John Ryker | Glenn Talbot | Grant Ward | Grandmaster | Guilt Hulk | Harpy | Hela | Herr Kleiser | High Evolutionary | HYDRA | Impossible Man | Ironclad | Juggernaut | Kang | Killer Shrike | Lady Deathstrike | Leader | Madcap | Maestro (Marvel)| Man-Beast | Mandarin | Mentallo | Mephisto | Metal Master | Mister Hyde | M.O.D.O.K. | Mole Man | Molecule Man | Moonstone | Nightmare | Ogress | Omega Red | One Below All | Onslaught | Piledriver | Presence | Red Ghost | Red King | Red She-Hulk | Red Skull | Rhino | Ringmaster | Roxxon | Sandman | Skaar | Skrulls | Super-Adaptoid | Super-Skrull | Talos the Untamed | Thanos | Thunderball | Thunderbolts | Thunderbolt Ross | Tiger Shark | Tinkerer | Titania | Tyrannus | U-Foes | Ultron | Vapor | Vector | Whirlwind | Worthy | Wrecker | X-Ray | Xemnu | Zzzax

Movies
Hulk (2003): David Banner | Glenn Talbot | Thunderbolt Ross | Gamma Dogs
The Incredible Hulk: Abomination | Strategic Operations Command Center (Thunderbolt Ross & Kathleen Sparr) | Samuel Sterns | Tough Guy Leader
Hulk Vs.: Professor Thorton | Deadpool | Lady Deathstrike | Sabretooth | Omega Red | Loki Laufeyson | Hela | Enchantress
Planet Hulk: Red King
Heroes United: Iron Man and Hulk: Zzzax

Television
The Incredible Hulk (1978): Dell Frye | Michael Sutton | Dark David Banner | Wilson Fisk
The Incredible Hulk (1996): The Leader | Abomination | Zzzax | Glenn Talbot | Doctor Doom | Wendigo | Hybrid
Hulk and the Agents of S.M.A.S.H.: Agents of C.R.A.S.H. (The Leader, Absorbing Man, Blastaar, Sauron, Titania & Abomination) | Annihilus | The Collector | Ego the Living Planet | Frost Giants (Laufey & Ymir) | Mole Man | Wendigo | Wrecker | Thunderball | Piledriver | Doctor Doom | Galactus | Terrax the Tamer | Loki Laufeyson | Malekith the Accursed | Dormammu | Skrulls (Super-Skrull) | Maximus | Medusa | Gorgon | Kree (Ronan the Accuser) | Firelord | Null the Living Darkness | High Evolutionary | Pluto | Xemnu | Red Ghost | Pluto | Dracula | HYDRA (Red Skull) | Supreme Intelligence | Doctor Octopus
She-Hulk: Abomination

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