Here are a few characters I would love to see on AOS
5. Frank Payne-In the comic Frank Payne is an agent of shield that is brainwashed into becoming a super villain. He eventually becomes a mercenary known as the Constrictor. The Constrictor simply won't be a MCU movie villain but he could be a great character for the comics. Depending on how they want to use him for the show he could be a great character. He could be a Hydra Agent that was once a Shield agent for AOS or he could be one of the Agents in Agent Carter that eventually becomes a bad guy.
4. Eric O'Grady- Known to most as the 3rd Ant-Man which sort of is the issue with the whole Pym particle thing. Anyone can put on the suit, use the particles bingo bango superhero. You end up with 10 different superheroes all having something to do with pym Particles and 10 different iterations of the same hero. But the character Eric O'Grady was a sold character. He's a shady, sometimes unscrupulous, always interesting Shield Agent. He would be perfect for AOS. He could be one of those now ex-Shield members. Not quite a Hydra member but also not a good guy. Possibly working as a mercenary. maybe taking money from Quinn. Possibly the guy that free's agent Ward.
3. Wendall Vaughn- Known to most as the first Quasar and now back as Quasar. I'm not saying give him intergalactic super powers. The fact is Quasar might never make his way to a MCU film. I know they will make Captain Carol Danvers, that's obvious she's a perfect tie in with Marvel Cosmic. But I doubt Quasar will get a film. That said Why not introduce the characer not the superhero of Wendall Vaughn. In AOS they need help from other "Shield Agents" obviously they can't do it all on their own. I think Wendall Vaughn would be a good start. He lacks the killer instinct, but he's heroic. he's the opposite of Grant Ward. he'd be a perfect reoccurring character that eventually "dies" saving the team later revealed that he found these crazy artifacts that give him super powers. But now he lives in Space. He could be used to eventually explain the crazy writing that Coulson has been doing....or Maybe Coulson is Wendall Vaughn and becomes Quasar.
2. Jonathon Darque- This is because I want Cybertek's parent company Roxxon Oil to be revealed at some point. Specifically to reveal them as the other villain and eventually that they are run by Alexander Lukin AKA THE RED SKULL. But they don't have to reveal that until Winter Soldier. We could have other villains from Roxxon Oil and one would be Darque. A silly villain that made a couple of appearances in Iron Man. But he'd be a great 3 episode arc in AOS especially if he uses old or stolen Stark Tech that he buys from former Shield Agent, maybe O'Grady (I've got it all mapped out in my mind) to make his Magma Suit in order to protect himself when he's attacked for creating an eathquake machine, as well as creating a machine that predicts earthquakes. it would be a cool storyline, a CEO that causes a bunch of earthquakes that holds the world hostage saying he's got the tech to predict earthquakes but you're gonna have to pay me a lot.
1. John Walker- He's known to us as the U.S. Agent or Super Patriot. He would be a great cameo or Character for Agent Carter. A kid that wants to be a hero so bad he becomes the "Private" version of CaptaiN America who eventually becomes a hero. If they don't use him in Agent Carter I would love for the Power Broker and Walker to be AOS specifically maybe a season 3 heroic redemption arc the way they created and redeemed Dethlok in Season 1 they could Creat US Agent and then have him redeem himself at the end of a season by defeating the Power Broker.
Honorable Mention:
Tony Masters
Curtiss Jackson
Nathan Garrett
Joseph Chapman
Isaiah Bradley