Bucky Barnes (James Buchanan Barnes / Winter Soldier)
A young sidekick who fought alongside the legendary Captain America during World War II. Bucky's last WWII adventure ended with him and Cap on Red Skull's rocket, and Bucky sacrificing himself to prevent the bomb inside the rocket from killing Cap. The Cosmic Cube eventually undoes Bucky's death, but he and Cap reunite under circumstances they would've never expected.
- Artificial Limbs: Winter Soldier has a mechanical left arm.
- Badass Normal: Bucky has no powers, just his skill.
- Brainwashed and Crazy: As a result of being Back from the Dead, he's a puppet of the Red Skull.
- Deadpan Snarker: He snarks quite a lot at Strucker when kicking his butt.
- Empowered Badass Normal: In the present day, he has clearly undergone some physical enhancements that vastly improve his reaction times, and also has a mechanical left arm.
- Functional Genre Savvy: During WWII, Bucky and Captain America storm into Red Skull's fortress, and they are attacked by... a cyclops (not the X-Man, but a one-eyed giant with a big maze). They had no idea what that thing was, but once they get rid of him, Captain America simply says to continue the mission. "Yes. Sure. No sense in keep thinking about the monster that almost eats us".
- Heroic Sacrifice: "The world needs Captain America more than Bucky." He was Killed Off for Real, but comes Back from the Dead via Cosmic Retcon, a la Jason Todd.
- Kid Sidekick: To Captain America.
- That Man Is Dead: When Captain America calls Winter Soldier, "Bucky", Winter Soldier responds, "Who's Bucky?", explaining that the sins he performed under Dell Rusk have rendered him unworthy of the name. Subverted after Cap and Winter Soldier defeat Red Skull once and for all: Winter Soldier bids Cap farewell with, "Bucky out."
Captain Marvel (Philip Lawson / Geheneris Hala Son Mahr Vehl)
A Kree alien scientist stationed on Earth. His stay caused him to develop an appreciation for the planet, particularly a fondness for Carol Danvers. This has motivated him to try and convince the other Kree aliens that Earth could prove a valuable asset in the Kree/Skrull war.
- Adaptive Armor: His outfit can morph a pistol, a sword, a giant cannon, etc.
- Anti-Villain: Type IV. He tries to temper Ronan and the Kree Empire, but it doesn't work and he reluctantly gets roped into an invasion. He eventually makes amends again.
- A Storm Is Coming: He warned the Avengers from the beginning that the Kree Empire would invade earth.
- The Atoner: Once Again, like Doc Samson, his reasons are mostly because he stood idly by while larger forces made their plans. He also decides to help defend Prison 42 and aids the Avengers in stopping the Kree invasion towards the end of the show.
- Authority Equals Ass Kicking: He is a Captain.
- Badass Family: His daughter, Phyla, is confirmed to appear in season 2 as the second Quasar.
- Becoming the Mask: As in all versions this is his reason for defying his Kree superiors.
- But Now I Must Go: He leaves in his debut episode to argue on the behalf of Earth. He came back.
- Composite Character: He is a combination of his Earth-616 self and his Ultimate self.
- The Good Captain: Mar-Vell really does try to lead as best he can, even after being reluctantly roped into an invasion of Earth.
- Hopeless Suitor: Captain Marvel/Mar-Vell may or may not be this towards Ms. Marvel. While he doesn't openly chase after her there are some hints that he may like her in a way that is more than just "friendly", but nothing serious ever really happens between them.
- Morph Weapon: His suit is built-in with the ability to create guns, swords, and other weapons, presumably through nanotechnology.
- Race Lift: He goes from the white-skinned Kree minority to the blue-skinned majority due to being based on his Ultimate incarnation.
- Rags to Royalty: Captain Mar-Vell began as a Kree spy on planet Earth, and ended as the new ruler of the Kree Empire.
- Red Oni, Blue Oni: He is the blue to Ms. Marvel's Red.
- Sour Supporter: He reluctantly chose to support the Kree's decision-making process, despite him not wanting Earth destroyed. He later makes amends.
- Spared by the Adaptation: In the comics, Mar-Vell dies of cancer. This version lives to the end.
- Token Heroic Orc: Mar-Vell is the only benevolent member of his species who does not want to conquer a planet.
- Tuck and Cover: This is how he accidentally gives Carol Danvers some of his powers.
The top agent of S.W.O.R.D., a branch off of SHIELD that specializes in extraterrestrial threats.
- Ambiguously Human: When Gyrich mentions there's nothing in her file about superhuman powers, she asks why he thinks she's human.
- Cool Shades: She wears sunglasses when on duty.
- Half-Human Hybrid: It's implied she's half alien like in the comics.
- Hot-Blooded: Her first appearance shows her threatening to shoot a computer that won't do what she says.
- Playing with Fire: She can shoot fire from her hands.
An alien warrior whose people and planet was destroyed by Surtur, making him one of the only survivors. Upon running into Thor, Bill discovers that he is worthy to lift Mjölnir, and joins Thor in battle against Surtur's demons.
- Adaptational Attractiveness: Played with. He's not exactly a looker in the cartoon, but in the comics his face is not much more than a skull. Which makes Thor's initial assumption that Beauty Equals Goodness a little more understandable.
- Bash Brothers: He is this with Thor.
- Fire-Forged Friends: Their first meeting ended up in a fight.
- Beauty Equals Goodness: Aversion; he looks like a monster both by humans and his people's standards, but he is such a noble person that he is one of the few persons beside Thor to be worth to hold Mjölnir.
- Costume Copycat: He is given an armor quite similar to Thor's at the same time than Stormbreaker.
- Cyborg: He is the pinnacle of Korbinite genetics and technology.
- Drop the Hammer: First with Mjölnir, then his personally forged hammer, Stormbreaker.
- Empowered Badass Normal: According to his tale, he was already the best warrior in his planet before he got enhanced genetically and cybernetically. And then he proved to be worthy of wielding Mjölnir. Which got Thor to get him a similar hammer.
- Face of a Thug: He looks like a monster, but he's really a good guy.
- Guttural Growler: Due to the fact that he is voiced by Steve Blum, this is to be expected.
- Monochromatic Eyes: His eyes are pure white.
- Only the Chosen May Wield: So far, he is the only other character who can use Mjölnir.
- Racial Remnant: While he's the last of his race that's currently alive and well, there are other Korbinites on his ship that are in suspended animation while he searches for a new home for them.
The Falcon (Sam Wilson)
An African-American superhero with a special harness allowing him to fly.
- Badass Normal: He has no special powers, only the suit.
- Brainwashed and Crazy: Falcon starts out working for Secretary of Defense Dell Rusk, who is really Red Skull.
- Clothes Make the Superman: His suit allows him to fly.
- Curb-Stomp Battle: He does this to Hawkeye.
- Easily Forgiven: He helps Red Skull capture the Incredible Hulk, but apparently the fact he did so against his will still makes Captain America deem him worthy of helping the team during "Code White" emergencies.
- Feather Flechettes: The feathers on his suit are razor sharp projectile blades.
Balder the Brave
A warrior of Asgard and Thor's half-brother.
A female warrior of Asgard who often fights alongside Thor.
- Action Girl: She is just as competent and powerful as her teammates, if not more so.
- Cool Helmet: It has giant wings on it.
- Dual Wielding: Her shield is often used as a weapon.
- Horseback Heroism: When she and the Valkyries rescue Giant Man and Wasp from Frost Giants; and on pegasi no less.
- Lady of War: Just like her comic book counterpart.
- Raven Hair, Ivory Skin: She has black hair and pale skin.
- Third-Option Love Interest: She seems to be this for Thor, the other two being Jane Foster and Amora the Enchantress. On the other hand, she seems to be developing feelings for Beta Ray Bill.
The leader of the Valkyrior.
- Action Girl: Comes with being the leader of a badass team of female warriors.
- Hair of Gold, Heart of Gold: Valkyrie is a golden-haired Asgardian who is genuinely heroic.
- Horseback Heroism: She rides Aragorn, a flying horse with wings.
- Psychopomp: Like the original Norse myths, she brings the souls of fallen Viking warriors into the afterlife.
- The Quiet One: She doesn't speak much compared to her comrades.
The Warriors Three
Fandral the Dashing, Hogun the Grim, and Volstagg the Voluminous, three Asgardian warriors that always fight as a group.
- Acrofatic: Volstagg. See Lightning Bruiser below.
- Badass Crew: They are a group of skilled Asgardian warriors.
The Guardian of the Bifrost Bridge and the brother of Sif.
- Cool Helmet: He wears a golden, horned helmet that looks rather nice.
Mr. Fantastic (Reed Richards)
Leader of the Fantastic Four. He can stretch his body to great lengths, and also works as a scientist. One of his achievements included the creation of Prison 42.
- Badass Bookworm: Reed is highly intelligent.
- The Cameo: In "Yellowjacket", he attends Hank Pym's funeral.
- Combat Pragmatist: This is exemplified by his threat to Iron Man, but he also shows off quite nicely against Doombots.
- Rubber Man: As always, Reed has the ability to convert the mass of his entire body into a highly malleable state at will.
- Workaholic: His tendency to put experimentation over socializing gets lampshaded by Tony.Reed: (only now facing his guests, after Tony spent several minutes recounting his adventures in Asgard) Where's Hank?Tony: Leave of absence. Are you really this oblivious, or are you just the dumbest man on the planet?
- Written-In Absence: He is not present during "New Avengers" because of a "diplomatic mission."
Invisible Woman (Susan "Sue" Storm)
Reed Richards' girlfriend. She has the powers to turn invisible, and create invisible force fields. When the Skrulls started infiltrating Earth, they replaced Sue with an imposter to infiltrate the Fantastic Four.
- Barrier Warrior: Part of her powers.
- The Cameo: In "Yellowjacket", she attends Hank Pym's funeral.
- Damsel in Distress: She is this after the Skrulls capture her.
- Invisibility: Part of her powers.
- The Load: While breaking Earthlings out of the Skrulls' cells, Madame Viper advises Captain America to leave Sue behind, as she might serve only as "dead weight" in her power-drained state. Cap frees Sue anyway, and she later creates a force field to protect Cap from Super Skrull.
- Ms. Fanservice
- Written-In Absence: She is not present during "New Avengers" because of a "diplomatic mission."
Human Torch (Johnathan "Johnny" Storm)
Sue Storm's brother. He has the powers to fly, and encase his body in fire.
- Attention Whore: "How could you not know this? I'm Johnny! Johnny Storm, the Human Torch?"
- Flying Firepower: His powers are Flight and Fire.
- Hot-Blooded: As with most versions.
- Playing with Fire: Can set himself on fire and shoot fire out of his hands.
- Written-In Absence: He is present during "New Avengers" because of a "diplomatic mission."
The Thing (Benjamin "Ben" Grimm)
Reed Richards' best friend. He has super strength, and skin made of rock. He joins the New Avengers in the midst of Kang's second invasion.
- Bash Brothers: He is this with Hulk when they're not at each others' throats.
- The Big Guy: He is this in both the FF and the New Avengers.
- Butt-Monkey: He's the Hulk's own personal Butt-Monkey.
- The Cameo: In "Yellowjacket", he attends Hank Pym's funeral.
- Catchphrase: "It's Clobberin Time!"
- Does Not Like Shoes: Unlike his counterparts from modern comics and the live-action movies, he doesn't wear boots.
- Fastball Special: He does this with Wolverine twice.
- The Rival: To the Hulk.
- Seen It All: He claims to have seen weirder than Kang's invasion during his adventures with the FF.
- Vitriolic Best Buds: He is this with Hulk, and double the emphasis on "vitriolic".
- Wrong Genre Savvy: He assumes that he is in an Alternate Universe when he meets War Machine.
A tough-skinned Hero For Hire who who finds himself and Iron Fist employed by Pym to try and recover his stolen equipment. Luke can't resist a good fight, as long as someone offers to pay him for catching the criminal. He joins the New Avengers in the midst of Kang's second invasion.
- Blood Knight: It's not extremely so, but he's always ready and eager for a good brawl.
- The Cameo: In "Yellowjacket", he attends Hank Pym's funeral.
- Deadpan Snarker: He has a very sarcastic sense of wit.
- Determinator: With the combination of his powers and personality, this is kinda a given. Shown especially when he pushed through one of Kang's blasts.Luke Cage: I'm gonna... tear... you... apart...!
- Embarrassing Nickname: "Power Man".
- Made of Iron: He has unbreakable skin and really enjoys No Sell-ing villains who try to attack him."It's called unbreakable skin, fool."
- Punch-Clock Hero: To an extent. His main concern is profit, but if push comes to shove he'll do the right thing and help -but he'll still send you the bill later, as Iron Man learned.
- Red Oni, Blue Oni: He is the red to Iron Fist's blue.
- Salt and Pepper: He is the pepper to Iron Fist's salt.
- Scary Black Man: At least to the villains, he is.
Iron Fist (Daniel "Danny" Rand)
A master martial artist, and friend of Cage's, who Pym also hires to track down the one who stole his Ant-Man equipment. Danny faces his duties as a Hero For Hire with a calm demeanor and an enchanted fist. He joins the New Avengers in the midst of Kang's second invasion.
- Ascended Fanboy: Though he actually manages to stay fairly level headed about it. Most of the time.We're working with the Avengers! Power Man and Iron Fist working with the Avengers. Kind of exciting.
- The Cameo: In "Yellowjacket", he attends Hank Pym's funeral.
- Chest Insignia: His iconic dragon tattoo is located on his chest.
- Deadly Dodging: He defeats one of Cross's goons this way.
- The Heart: In the New Avengers.
- Meditation Powerup: This is how he gains super senses and iron fists.
- Power Fist: He charges his eponymous iron fist with chi energy to pack an extremely powerful wallop.
- Red Oni, Blue Oni: He is the blue to Luke's red.
- Salt and Pepper: He is the salt to Luke's pepper.
- Technical Pacifist: When he and Luke run into some time-displaced ninjas, Iron Fist first tries telling them in Japanese that he doesn't want to fight them. They attack anyway, and he curb stomps the lot of them. Luke doesn't understand why he wouldn't want to fight in the first place.
- Truer to the Text: Just like with Luke, this Iron Fist is much more faithful to his comic book counterpart compared to the version from the Ultimate Spider-Man cartoon.
Ant-Man II (Scott Lang)
An electrical engineer-turned bank robber-turned custodian who stole Hank Pym's Ant-Man suit to save his daughter, Cassie Lang, from Crossfire. Instead of having Scott go to jail for his latest bank robbery, Hank (along with Iron Fist and Luke Cage) helped him rescue Cassie, then allowed Scott to become the new Ant-Man. Iron Fist also invited Scott to join the Heroes For Hire.
- Adaptation Dye-Job: Scott's a redhead in the comics, but here his hair is brown.
- Almighty Janitor: Hes a former electrical engineer working as one.
- Anti-Villain: Type II.
- Back for the Finale: After Scott's first appearance in episode 31, we don't hear from him again until the last episode, when he and several other heroes answer Captain America's "Code White."
- Instant Expert: Subverted, it takes Scott some time to learn how to use the Ant-Man gear. They even show him training with it before he goes on a heist.
- Justified Criminal: He carries out thefts using the Ant-Man gear in order to pay off criminals holding Cassie hostage, and previously robbed banks with those criminals in order to pay for Cassie's medical treatment.
- Legacy Character: The second man to don the Ant-Man persona.
- Magic Pants: Unlike Hank's labcoat or Jan's casual outfit, Scott's burglary garb shrinks along with him.
- Papa Wolf: He goes after mobsters with vigilantes after they hold his daughter hostage.
- Sizeshifter: It comes with being Ant-Man.
Tropes applying to the team as a whole
- Adapted Out: Their line-up is taken from the 2008-2010 Abnett and Lanning run, but leaves out Gamora, Drax, Mantis, Major Victory, Bug, Jack Flag and Moondragon.
- Hero of Another Story: They've clearly been operating as a team on their own out in space for some time when they show up.
- Translator Microbes: None of them speak English at first, which causes some communication problems.
Star-Lord (Peter Quill)
Leader of the Guardians of the Galaxy and the only actual human member in this incarnation.
- Badass Normal: He is the only Guardian without special powers.
- Cool Mask: His mask covers his face and is pretty cool.
- Cryptic Background Reference: He is the Star-Lord, which is apparently a title worthy of respect, according to Rocket Racoon, but the characters don't stop to say why, or what being a Star-Lord entails.
- Guns Akimbo
- Half-Human Hybrid: He is half-human and half-Spatoi.
- The Leader: Type II.
- Red Oni, Blue Oni: He is the blue to Rocket Raccoon's red.
A Halfworlder raccoon, weapons specialist and second in command of the Guardians of the Galaxy
- Alliterative Name: Rocket Racoon
- Animal Superhero: He's a racoon.
- BFG: His guns are as big as he is.
- Big Guy, Little Guy: Hes the little guy to Groot's big guy.
- Guns Akimbo: He holds two guns that are larger than him in each hand.
- More Dakka: During his fight with the Hulk, Rocket Raccoon appears to be unarmed at first, but then he pulls out a large pair of blasters and begins firing away like crazy.
- Pint-Sized Powerhouse: Despite being the smallest and least physically imposing member of the Guardians, Rocket Raccoon starts the battle by going after the Hulk and holds his own for most of the battle.
- Red Oni, Blue Oni: Hes the red to Star-Lord's blue.
Possessor of the Soul Gem. Helps the Guardians locate cosmic anomalies.
- Badass Longcoat: He wears a blue trench-coat.
- Pivotal Wake-up: When he awakens from the trace put upon him by the Soul Gem.
- Psychic Link: The alien members of the Guardians are able to speak English to the Avengers because of this.
- The Stoic: Incredibly calm and unflappable.
Wielder of the Quantum Bands and a member of the Guardians of the Galaxy.
- Adaptation Relationship Overhaul: In the comics, Phyla-Vell is Mar-Vell's daughter. Here, there's no indication they're connected in any way.
- Energy Weapon: She can create many of these with her quantum bands.
- Magical Eye Streamers: Or streamer singular, in this case, when she uses her energy powers.
- More Dakka: When Iron Man comments that his shields should be more than enough for her energy sword, Phyla uses the quantum bands to construct a multitude of weapons which surround Iron Man.
- The Smurfette Principle: She is the only girl in her group.
He is Groot!
- The Big Guy: Hes the largest of the group.
- Big Guy, Little Guy: He is the big guy to Rocket Raccoon's little guy.
- Healing Factor: He has a very impressive one. Groot can regenerate lost limbs and even his entire body within seconds of being destroyed.
- Plant Aliens: He looks like a tree.
- Pokémon Speak: "I am Groot!"
- When Trees Attack: An alien tree in this case.