After being rebooted for a second time, the MCU's adaptation of Spider-Man took the web head back to his roots. Spider-Man was debuted as the fifteen-year-old sophomore he was in the comics during Captain America: Civil War. Though Spidey faced many skeptics in the MCU, his mentor Tony Stark believed in the aspiring hero's potential for greatness.
Unfortunately, the teenager's journey to becoming a world-famous Avenger was a long and tumultuous one. Tom Holland's Peter Parker saw more than his fair share of mistakes along the way. Whether they're small gripes or universe-altering events, fans can always count on the web-slinger to take full responsibility for his actions.
10 Abandoning Ned At Liz Allan's Party
One of Spidey's greatest conflicts lies in struggling to balance the worlds of Peter Parker and Spider-Man, often leading him to neglect one in favor of the other. In 2017's Spider-Man: Homecoming, Peter Parker abandons Ned Leeds at a party when he's sidetracked by a nearby black market arms deal.
Ned tells Peter's crush, Liz Allan, that he knows Spider-Man. She invites the two high schoolers to her house party under the promise that the web-slinger will make an appearance. While Peter reluctantly accepts, his decision to bail leaves his friend high and dry, subject to the mockery of his fellow classmates.
9 Seeking Doctor Strange's Help To Rewind Time
When Mysterio outs Peter's secret identity as Spider-Man to the world, Peter's life begins to unravel around him. Spider-Man: No Way Home finds Peter's friends struggling to get accepted into college due to their association with him. So, Peter seeks Doctor Strange's help in undoing the damage Mysterio caused.
Though Doctor Strange agrees to help Peter, the sorcerer gets angry after he realizes Peter didn't talk to college admissions before recruiting the Sorcerer Supreme to brainwash the world. While Doctor Strange failed to warn Peter about the consequences in advance, Peter should have exhausted his options before resorting to magic.
8 Crashing The Staten Island Ferry Arms Deal
As Peter is still, effectively, an amateur superhero during Homecoming, it makes sense that he'd make more brash decisions and rookie mistakes. As the Vulture and his crew put the young Spidey in increasingly perilous situations, Peter finds himself neglecting his schoolwork and missing his classes.
As Iron Man checks in on the young Parker, he finds the web-slinger trying to shore up a collapsing ferry after a weapons deal goes sideways. Stark reprimands Peter for attempting to tackle the situation on his own and tells the teenager to return the suit Stark gave him. More worrying, however, is the fact that Peter's reckless actions made him a new enemy in Mac Gargan.
7 Disabling Stark's Training Wheels Protocol
Spider-Man has frequently gone behind Stark's back. One of the wall crawler's more egregious errors was hacking his multi-million dollar suit so that his movements couldn't be tracked by Stark's close correspondent, Happy Hogan.
Frustrated at the prospect of being treated like a kid, Peter has Ned disable his suit's tracking device and training wheels protocol when they take a school trip. With the suit's full functions active in the middle of a dangerous mission, Peter quickly discovers how unprepared he is.
6 Ghosting Nick Fury Before Summer Vacation
Peter manages to top his hacking endeavors in 2019's Spider-Man: Far From Home. He decides to ignore a call from the man formerly in charge of S.H.I.E.L.D., and responsible for assembling the Avengers: Nick Fury. Determined to just focus on his upcoming summer vacation, Peter ignores multiple calls from Fury.
In an ironic twist of fate, however, Peter finds himself entangled in a battle between Mysterio and a fake water elemental when their class visits Venice. Following the fight, Peter suddenly finds himself face-to-face with the imposing Fury, who calls Peter out for ghosting him and dodging his responsibilities as a superhero.
5 Ordering A Drone Strike On Brad In Czechia
In the wake of Tony Stark's passing in Far From Home, Peter finds himself in the possession of the E.D.I.T.H. AI, a gift from his late mentor. E.D.I.T.H. is an artificial tactical intelligence system that Peter needs when his classmate, Brad, takes a compromising picture of him during a pit stop in the Czech Republic.
Through a couple of lines of miscommunication, E.D.I.T.H. interprets Peter's request to delete Brad's footage of him as a kill order and issues a drone strike on Peter's minibus to eliminate the target. A panicked Peter has to distract everyone with some baby mountain goats, so he can jump at the window of opportunity to take out the deadly drone.
4 Giving Ned A Chitauri Detonator Core
Admittedly, Peter didn't know he was making a mistake when he asked Ned to look after a Chitauri energy core. However, when Peter discovers more weaponized Chitauri technology in a cargo truck, his suit's AI informs him that the core is actually capable of transforming into a bomb when it's exposed to radiation.
Homecoming sees the Chitauri nearly blowing off the top of the Washington Monument, with Peter's friends stuck at the top of it. Though Peter does manage to save his friends (and his crush) in the nick of time, his mistake nearly destroys a historical U.S. landmark and almost gets him arrested.
3 Inviting Multiverse Villains To Happy's Place
In No Way Home, Peter realizes the multiverse villains he brought to his world would die in battles with Spider-Man in their respective realities. The young hero resolves to find a way to cure their mental instabilities and save them. However, Peter's choice to free them all and bring a bunch of strangers over to Happy Hogan's apartment was a big mistake.
Unfortunately, this mistake turns out to be a costly one, as Aunt May pays with her life after the Green Goblin reasserts control over Norman Osborn's body. Instead of freeing all his most dangerous villains, Peter could have brought their cures to the Sanctum Sanctorum where the multiverse antagonists were being held.
2 Handing E.D.I.T.H. Over To Quentin Beck
Quentin Beck and his team of former Stark employees had everyone in the MCU believing that the threat of the elementals was real and that Mysterio was a true hero. Overwhelmed by unwanted responsibility, Peter can be somewhat forgiven for handing control of E.D.I.T.H. over to Beck.
But Peter isn't learning from his run-in with Fury. He cannot evade his responsibilities as a hero. After Zendaya's MJ gives Peter a holographic projector, the wall-crawler realizes how big a mistake he's made. His mistake causes events to spiral out of control and leads Mysterio to publicly frame Spider-Man as a villain.
1 Trying To Change Doctor Strange's Spell
Peter's first mistake in 2021's No Way Home is asking Doctor Strange to cast a spell to make everyone forget he's Spider-Man. However, his most significant error comes when Peter tries to change the parameters of Strange's spell mid-casting, causing the multiverse to break open.
Given that this sees the return of Spider-Man's worst enemies, not just from the MCU, but from all realities, it's pretty safe to assume this is one of the worst mistakes he's ever made. Though Peter makes the hero's choice at No Way Home's end, it comes at the cost of everyone forgetting who he is, including all of his loved ones.