A billionaire industrialist and a brilliant inventor in his own right, Tony Stark is the team leader. Following an incident that left him with a piece of shrapnel in his chest, Tony designed an electromagnetic harness to keep himself alive, and eventually, a suit of armor that could be powered by it.
Aesop Amnesia: No matter how many times Tony learns that relying solely on technology will not work, he's right back to being a smug jerk who thinks his tech is infallible the very next episode.
Attack! Attack! Attack!: His plan to attack the HYDRA base? Hit everything hard. Later, he keeps pounding on the Super-Adaptoid while Cap's busy trying to tell him that it's not gonna work.
Brought Down to Badass: in Exodus (part 1 of the Season finale) Tony brings all of his armors to assist the Avengers, and they all get destroyed in the process, leaving Tony without any armor. The Final Showdown (part 2) has him find a replacement in the entire Avengers Tower, and finally, an alliance with MODOK sees Tony getting back the armor Skull stole from him.
But He Sounds Handsome: Tony can't resist giving himself a pat on the back or two while disguised as the Grim Reaper and trying to infiltrate the Cabal. Comes back to bite him, though, as it makes MODOK and Skull suspicious.
Divide and Conquer: He plays on MODOK's resentment and Attuma's lust for power to have them start a brawl with Red Skull at one point.
Disability Superpower: It's hard to remember sometimes but that arc reactor in his chest is a glorified pacemaker. Remove the arc reactor and Tony's heart will very quickly give out. MODOK demonstrates this fact early on.
Heroic BSOD: First in By The Numbers, when his haughty dependence on his suit's probability programs ultimately lead to Skull getting his hands on The Tesseract. Then in Exodus, he gets another one when he nearly gets Falcon killed, resigning leadership to Cap.
If My Calculations Are Correct: Tony puts a little too much faith in his probability programs, despite Cap's warnings that you can't accurately predict the human element. Tony replies the human element is insignificant as a far as his calculations are concerned. When going up against a strategist of the Red Skull's caliber, this proves to be his undoing.
It Only Works Once: Tony has a tendency to learn from his mistakes. For example, when MODOK ripped his armor apart with his mind in the first episode Tony installed psychic inhibitors afterwards to prevent a repeat of said incident.
The Leader: He's in this position instead of Cap, though they sometimes appear to share the role.
Takes a 10MinuteRetirement in Exodus after being shaken by almost getting Falcon killed, handing the wheel to Cap.
A sickly young man from Brooklyn turned into a perfect soldier by a government project during World War II. He ended up frozen in ice and awoken in the modern era during a battle with the Red Skull. His weapon of choice is a Vibranium shield that can absorb all energy directed at it, making it ideal as both protection and as a projectile (as it does not lose energy when it makes contact with another surface when thrown).
Genius Bruiser: Steve has intelligence to complement his physical ability, which is on full display in "Super-Adaptoid".
Genre Savvy: Upon the Hulk seemingly destroying the Super-Adaptoid, he remarks "It's never that easy."
He makes the same observation about it being too easy when the team captures Red Skull and brings him on board the Tri-Carrier in Bring On The Bad Guys. He's right. He also noticed that something had changed when Red Skull actually started supporting his teammates.
The Strategist: Able to instantaneously formulate ironclad attack patterns, formations and strategies based on split second assessment of the situation compared to the abilities of the Avengers. In later eps, one starts to wonder why Tony, though brilliant, is still the leader of the Avengers when it's clear he's used to handling a solo gig and relying on algorithms to predict superhero-villain battles.
To further highlight it, Cap tends to focus on the Big Picture while Iron Man focuses on the details. As a result, Cap knew they were in trouble in By The Numbers because the Hulk was injured and the Cabal was dividing them up while Iron Man kept insisting every thing was alright because his detail oriented probability program said so.
Badass Normal: No super powers to speak of, but he's a highly trained ex-SHIELD agent and a deadly archer.
Badass Biker: He has a real nice hoverbike that he is typically seen riding on.
Handicapped Badass: After being temporarily blinded by the Cosmic Skull during the season 1 finale.
Characterization Marches On: When he first appeared in UltimateSpider-Man, he was serious and calculating if sarcastic and having a sense of humor. However, in this adaption, he's still sarcastic, but he's portayed as cocky, impulsive and somewhat immature.
Clark Kenting: Most of the Avengers have masks; or in the case of the Hulk are mutated heavily from their normal human features; or in the case of Thor don't actually have a secret identity. Hawkeye just wears a pair of purple shades.
Berserk Button: Messing with his cape seems to be an open invitation for an ass-kicking.
The Big Guy: The tallest of the Avengers right after Hulk.
Boisterous Bruiser: Thor likes a good time; in the first episode, he's excitedly telling Hawkeye about an Asgardian festival he was missing out on. Then there's the time he and the Avengers went to a diner after defeating Hyperion.
When we finally meet his dad, Odin, we see were he got it from.
Chekhov's Gun: He loses Mjolnir during the first half of "The Final Showdown". It gets back to him during the climax, just in time to stop the Red Skull from killing everyone by knocking him and the Tesseract into a portal.
Set Right What Once Went Wrong: Because he was in Asgard, and therefore in a different dimension, when Doom fired up his time machine in Planet Doom it is up to Thor to restore the timeline to it's original state.
He's big, green and likes to punch things. What more needs to be said? Formerly Bruce Banner, a leading scientist in the field of gamma radiation, he developed an alternate personality that manifested as the rampaging monster known as The Hulk after being mutated by said radiation.
Heel Realization: He does realize, somewhat, that he isn't the best roommate in the world in Hulked Out Heroes.
Hulk (as Hulk!Thor runs off all pouty): So that's what it's like to live with me. (Beat) I'd hate living with me.
Hidden Depths: His friendship with Glorium, being bowling buddies with The Thing, his glass figurine collection; these are not exactly things you would typically associate with a big gamma radiation-powered Blood Knight.
Locked into Strangeness: Banner did invent a means to cure the gamma radiation sickness that turns people into hulks. Unfortunately, by the time he did, he had been the Hulk for so long that using it on himself would kill him.
Too Spicy for Yog Sothoth: When Dracula bites him, turning him into a vampire and gaining his abilities. Turns out Gamma Radiation has an effect similar to sunlight.
Took a Level in Kindness: By the time the events of Hulk Agents Of Smash come around, he has tempered his anger and anti-social behavior considerably. This doesn't really bleed into his current interactions with the Avengers though.
Offhand Backhand: Casually backhands a mook trying to get the drop on her while chewing Tony out.
Out of Focus: Of all the Avengers she has had the smallest role, and aside from a few spotlight episodes, she's been a minor character. This may be justified due to also working directly for SHIELD, as revealed in "All-Father's Day".
Screw This, I'm Outta Here!: In response to watching the Hulk and Hawkeye tearing apart the mansion in one of their fights he looks across the hall at Captain America, says "This is your problem Captain Hall Monitor" and goes back to bed.
A brilliant, ruthless and power-hungry Nazi officer and prototype Super Soldier during World War II and the current head of the terrorist group HYDRA. The Red Skull is the Big Bad of the series, leading a Legion of Doom called the Cabal in addition to his own HYDRA forces.
A God Am I: He's always had this, befitting a supervillain, but takes it Up to Eleven at the end of Exodus, when he's merged with the Tesseract.
The Bad Guy Wins: He pretty much gets what he wants in the first episode, "Blood Feud", and "Super-Adaptoid".
And again in "Bring On The Bad Guys".
Once more in "By the Numbers". Though he loses his stolen Arc Reactor, he does get the Tesseract.
Badass: He's definitely a force to be reckoned with.
Bad Boss: In Bring On The Bad Guys, he starts making an effort to not be this, and as a result, the Cabal begins working as a much more cohesive and effective unit.
Exodus reveals just how bad of a boss Skull is. Skull used the Tesseract to open portals to other worlds for MODOC, Dracula, Attuma and Hyperion to conquer for their own (ones that accommodate the conquering villain, at that), but Tony reveals it's just essentially a window that will kill anyone who walks into it. Yes, that's right. Skull was going to massacre AIM, HYDRA, Dracula's vampires, the Atlanteans, and his team all in one hit.
Realizes he needs help if he's gonna take down the Avengers. Plus, he tends to come out ahead in most of the episodes he's appeared in so far.
He also notices when Grim Reaper and Crossbones start acting more intelligently then they normally do, since they are really Cap and Stark in disguise.
He is fully aware of the Never Found the Body trope and tells Hammer to search the area again after Hammer assures him that Iron Man is dino-chow.
Disability Superpower: The serum may have made him a Super Soldier but it also was slowly killing him. He tries to steal Cap's body to avoid death and when that doesn't work, he take's Tony's reactor and armor.
The Dreaded: Iron Man nearly has an Oh Crap moment in the first episode when Jarvis shows that Red Skull's still alive.
Evil Versus Evil: He and Doom don't get along. Part of it has to do with the fact they're rivals for world domination. Another part might have to with the fact that Red Skull's an ex-Nazi officer and Doom's half-Gypsy.
Grand Theft Me: He tries to steal Cap's body in the first episode. Came close to succeeding too.
Grand Theft Prototype: Since the above strategy didn't pan out, though not for a lack of trying, he decides to settle on acquiring Iron Man's armor and arc reactor. This strategy pays big dividends. Also, he later successfullu hijacks the Tri-Carrier, with Nick Fury on board no less.
The Man Behind the Man: The reason Dracula and Justin Hammer picked a fight with the Avengers? Him. He's on the other end of this with Thanos, his master.
Pet the Dog: In an incredibly dark subversion of the trope. The Cabal is practically giddy when Skull assigns them to conquer worlds hand-picked for them - such as an eternally dark, starless world for Dracula, or a largely oceanic world for Attuma. Then Tony reveals the portals are just death traps waiting for the Cabal to enter and get themselves killed. Needless to say, the Cabal is completely horrified by this new low Skull's descended to.
Powered Armor: He steals Iron Man's armor at the end of the first episode.
Putting on the Reich: Most of the time we see him, he's wearing an SS uniform with the Hydra insignia replacing the eagle and swastika when he is not wearing is suit of armor. Considering that he's actually an ex-SS officer, it's not too surprising.
Take Over the World: His ultimate long-term goal and the reason he wants to destroy the Avengers is because they stand in the way of him achieving it.
Villain Team-Up: After his first dust-up with the Avengers, he decides he needs a team of supervillians to counter them, hence the Cabal.
Villainous Friendship: In Bring On The Bad Guys he figures out he and his team must trust each other if they are to defeat the Avengers and if nothing else, he earns it when he successfully masterminds Hyperion's escape. After this, the Cabal is pretty loyal to Skull and admit he's not so bad a leader after all.
Ultimately proven to be a facade; he plotted to completely wipe out his troops while he had the Tesseract for himself.
Walking Armory: If the massive salvo he fired at Doom in Ambassador is any indication it looks like he and MODOK upped the firepower on his armor a little bit since he acquired it from Stark.
With Great Power Comes Great Insanity: His rationality and caution tend to go out the window whenever he comes into the possession of astounding power. The only notable occasion when he didn't fall to this was in By The Numbers when he makes a rational decision on what to do with the Tesseract. However, when he later merges with the Tesseract, he finally has the bite to back up his bark.
Xanatos Speed Chess: He does this at times. It is especially evident in the first-episode and By The Numbers. MODOK even lampshades it.
Weapons designer for HYDRA, their resident Mad Scientist and right hand man to the Skull.
Adaptational Badass: MODOK's shown to be more powerful than he usually is in other media. He took down Iron Man quickly, took out their jet and came within a hair's breadth of having them kill each other.
Then comes By The Numbers and he kicks Thor's ass.
Hate Plague: He uses nanobots to unleash one on the Avengers.
Insufferable Genius: MODOK has an ego even bigger than Tony Stark, no mean feat there, and little impulse control. He also bitter about the fact that the Skull is in charge and views MODOK as little more than a technical adviser and supply officer.
Kick the Dog: He uses the Adaptoid to knock some fighter planes out of the sky. His next course of action? Take aim at the helpless pilots who ejected themselves in the nick of time.
Appears to have finally gotten some respect from the others during The Final Showdown, after his quick thinking and intellect helped engineer Cosmic Skull's defeat. The others don't object (at least for now) when he takes leadership of the Cabal.
Pet the Dog: When the alliance between the Cabal and the Avengers has successfully defeated the Cosmic Skull, MODOK's first act as new leader is to leave well enough alone and fight another day.
Pragmatic Villainy: When things get bad in The Final Showdown, he's the first to seriously consider allying with the Avengers, even saving them from certain death.
The King of the Vampire Nation, Dracula is centuries, if not thousands of years old. He fought with Capatain America against HYDRA and the Skull during World War II when they invaded his kingdom. But that alliance was only temporary, now he seeks Cap's blood as he believes it will make him immune to sunlight.
Deadpan Snarker: Gets in a good one on both MODOK and Attuma at dinnertime.
(after witnessing Attuma's lack of table manners) Dracula: The repugnant one does have a point. They're called "utensils", try one!
Enemy Mine: With Captain America by the past, and later with Skull. And with the rest of the Cabal, pulls this with the Avengers against Cosmic Skull.
Evil Cannot Comprehend Good: He's quite confused when Captain America pushes him out of the way of a Cosmic Unibeam, mostly because he's spent a good deal of the season trying to suck his blood and turn him into an inhuman thrall.
Evil Counterpart: To Thor since he is the supernatural powerhouse of the Cabal. When there is a battle Thor and Dracula usually face off.
Knight of Cerebus: Well, he did blow up his home planet when the people didn't submit to his rule and has no problems with attacking children, which is pretty dark, to say the least.
Knight Templar: Thinks he's a hero combating the forces of evil. But if you oppose him or even disagree with his methods, he views you as part of the problem.
Might Makes Right: He's stronger than everyone else, and he expects them to line up and obey him.
Mythology Gag: His antagonism towards Thor and his rescue from SHIELD by the Cabal darkly mirrors his friendship with the God of Thunder and liberation from the clutches of AIM in Jonathan Hickman's Avengers run.
OOC Is Serious Business: When Hyperion is calling someone a "villain" that villain being Red Skull, who was just revealed to be trying to wipe out his entire army for the hell of it, you know it's gotten bad.
Pragmatic Villainy: He makes a perfectly logical point when he pressures Skull to kill the Avengers, as they are "beaten, not broken."
Rage Quit: So the people of his home planet rejected him and rose up against his totalitarian rule. His response? Blow up his homeworld and start looking for a new planet where he could establish himself as the top dog.
Badass in Distress: During The Ambassador, when he's forced to go without weapons for the duration of the episode when speaking to the United Nations.
Big Bad Ensemble: He's the most recurring major villain outside the Cabal and is actively working against Skull.'
Day of the Jackboot: We get a good look at what New York City would be like if Doom had ruled it for a few years in Planet Doom.
Demoted to Dragon: Doom actively averts this, vehemently refusing to follow Skull's lead.
In Exodus, we learn that this was a very smart choice indeed.
Diplomatic Impunity: Doom's a super-villain but he is also the legitimate head of state of a sovereign nation, which grants him some legal protection. The Avengers trying to find a way around this forms a considerable plot point in Ambassador.
Don't You Dare Pity Me!: His reaction to Tony offering to assist in rebuilding the Destroyer destroyed area of Latveria, is to shock him, refuse, and tell the Avengers to get the hell off his land.
Egopolis: He renames Earth Planet Von Doom after he conquers it and changes the Statue of Liberty to a statue of himself when he makes New York the capitol of his world empire.
Emperor Scientist: Granted, he plays around with magic just as much as he plays around with technology.
Enemy Mine: The Avengers, especially Cap, end up escorting and body-guarding him during his visit to the United Nations. Of course, Doom has ulterior motives.
Even Evil Has Standards: For all that that he's an evil, power-hungry bastard, Doom is genuinely horrified when he sees the damage that he did to Latveria while wielding The Destroyer. Black Widow even notes this as the first sign that something isn't right with him: As much of a tyrant as he was, Doom never stooped to killing his own people.
Evil Is Not a Toy: Invoked when he tries to summon and control the Midgard Serpent. Whether he would succeed in controlling him or not is left ambiguous at best. Later, it's shown that he did succeed in controlling the beast. However, he still went overboard with the Destroyer.
Out-Gambitted: By Captain America and the Avengers in "The Ambassador".
Pet the Dog: He genuinely cares about his country even if he's a dictator. He also went out of his way to save Cap, something that shocked the Cabal and the Avengers into silence for a while. Even if he had ulterior motives, he seems to have at least a hint of sincerity when doing this.
Shout-Out: Going with the show's heavily movie-inspired approach, this Loki is an almost complete copy of the MCU version. His first appearance is giving the same Kubrick Stare he gave in the movie, and he's in the same pose as well.
Smug Snake: While he's competent, he still looks down on the Avengers despite past events and is prone making the same mistakes.
CEO of Hammer Industries, a major weapons manufacturer and a self-declared rival of Tony Stark. Tony, meanwhile, describes him as an obnoxious loser wannabe.
Big Bad Wannabe: Wanted to join the Cabal. Unfortunately, his attempted audition didn't impress Red Skull. His robot, on the other hand, did. He tries again in Savage and comes close, again, to joining the Cabal before getting overconfident and getting his ass handed to him.
Villain Has a Point: He verbally rips Hawkeye a new one by pointing out that he and the Hulk fight over every stupid little thing, causing massive collateral damage in the process, and that he just put what they do naturally every day on live television but somehow he is considered a bad guy. You can tell by Hawkeye's facial reaction that he realize Mojo does have a valid point.
Son of the supervillian Molecule Man, Aaron Reece has recently acquired his father's invention: a device that allows the user to manipluate non-organic matter on the molecular level. He doesn't want to follow in his dad's footsteps and for most of his debut episode just wants to be left alone. Tony eventually convinces him to join SHIELD and talks Nick Fury into taking him in.
Cursed with Awesome: The wand only works for him and his dad, and while it's powerful, it's also wrecked his family, sent his dad to prison and put him in AIM, and by extension HYDRA and Red Skull's, crosshairs.
Cut Lex Luthor a Check: Reece Sr. invented what Tony Stark rightly called "the invention of the century" and the only thing he could think of using it for was to go on a crime spree.
The Allfather of the Nine Realms, and the king of Asgard. One of the most powerful beings in the universe, he is also a fair leader to boot. Though he holds no malice towards Midgardians, he believes they are weak and insignificant in the grand scheme of things. He wishes Thor would choose Asgard over Earth.