A popular trend in the Marvel Cinematic Universe is that villains in the various films and TV shows are in some way created by Tony Stark, or in some cases his father Howard. In a literal sense, this includes Ultron, but in a more metaphorical sense includes Whiplash and Aldrich Kilian. My question is: what MCU villains were the result of either of the Starks? This includes the cinematic and television versions. They could have been screwed over, literally created, or some other thing.
The Stark family were responsible for quite a lot of them.
1. Whiplash aka Ivan Vanko
Vanko's father was apparently [kind of] betrayed by Howard Stark that led to his death. Ivan thus made his life's goal to destroy the Starks.
Ivan: What your father did to my family over 40 years, I will do to you in 40 minutes.
Iron-Man 2 (2010)
Also Fury clears up what happened between Howard Stark and Anton Vanko:
Fury: Anton Vanko is the other side of that coin. Anton saw it as a way to get rich. When your father found out, he had him deported. When the Russians found out he couldn’t deliver they shipped his ass off to Siberia and he spent the next 20 years in a vodka-fuelled rage. Not quite the environment you want to raise a kid in, the son you had the misfortune of crossing paths with in Monaco.
Iron-Man 2 (2010)
2. Mysterio aka Quentin Beck
Tony took Beck's work and renamed it BARF, and also had him fired stating Beck to be unstable
Quentin Beck: The jester king. Literally wrapped in wealth and technology that he was unfit to wield. Like the holographic system I designed. A revolutionary breakthrough with limitless applications that Tony turned into a self-therapy machine and renamed...
[Brief flashback of Tony in Captain America: Civil War, where Tony Stark presents his final meeting with his parents, using the same holographic technology]
Tony Stark: Binarily Augmented Retro-Framing, or BARF...
[The crowd laughs while the hologram disappears and Tony takes off his glasses]
Tony Stark: Oh, $611,000,000 for my little therapeutic experiment...?
[Zoom in, Quentin Beck is standing behind Tony, with a disgusted grimace on his face]
Quentin Beck: He renamed my life's work BARF. I told him that it was a mistake. That my technology can change the world. And then... He fired me. Said I was... unstable.
Spider-Man: Far From Home (2019)
3. The Vulture aka Adrian Toomes
In Spider-Man: Homecoming, Toomes tells Peter how Stark indirectly ruined his life:
Toomes: (sighs) Peter, you’re young. You don’t understand how the world works.
Peter: Yeah, but I understand that selling weapons to criminals is wrong.
Toomes: How do you think your buddy Stark paid for that tower? Or any of his little toys? Those people, Pete, those people up there, the rich and the powerful, they do whatever they want. Guys like us, like you and me, they don’t care about us. We build their roads and we fight all their wars and everything, but they don’t care about us. We have to pick up after ‘em. We have to eat their table scraps. That’s how it is. I know you know what I’m talking about, Peter.
Peter: Why are you telling me this?
Toomes: Because I want you to understand....
Spider-Man: Homecoming (2017)
4. The Real Mandarin/Aldrich Killian
Flashback into the events before Iron-Man (2008), in 1999, Bern, Switzerland's New Years Eve Party, the humiliation and ignorance led Killian to become Tony's archenemy.
NOTE: To name a few others,
Maximoff twins were created and tortured by Hydra. Most importantly, their family was destroyed by bombings that used Stark weapons. However, the twins cannot be counted as villains, because they were simply misguided and misled.
Pietro Maximoff: We were ten years old, having dinner, the four of us. When the first shell hits, two floors below, it makes a hole in the floor. It's big. Our parents go in, and the whole building starts coming apart. I grab her, roll under the bed and the second shell hits. But, it doesn't go off. It just...sits there in the rubble, three feet from our faces. And on the side of the shell is painted one word...
Wanda Maximoff: Stark.
Helmut Zemo lost his family during Avengers: AoU thus made his goal to destroy the Avengers.
- Iron Monger/Obadiah Stane: His jealousy towards Tony
Stane: For 30 years, I've been holding you up! I built this company from nothing! Nothing is going to stand in my way.
Some notable Stark villian creations (from the animated series)
- Swarm (in Ultimate Spider-Man Animated Series)
- Ultron 5 (in Avengers: Earth's Mightiest Heroes)
- Yellowjacket (in Avengers: Earth's Mightiest Heroes)
- Technovore (in Iron Man: Armored Adventures)
- Alexander Nevsky aka Crimson Dynamo (in the comics)
- Valentin Shatalov aka Crimson Dynamo (in the comics)
- Iron Skull and Cosmic Skull (in Avengers: Assemble)
PS: The list is very long, I intend to add more names when I find them.