Bumblebee showing up at the USJ to deal some smackdown on the villains.
Izuku punching Dropkick so hard that the Decepticon's chest plate cracked and was sent flying away along with Shatter.
Optimus Prime making his appearance leaves the humans spellbound.
Even better, he does his usual Big Damn Heroes routine to save Bumblebee and Windblade via Groundbridge.
All Might showing up and destroying the beacon Shatter was using to summon the Decepticons to Earth.
All Might and Optimus Prime teaming up to take down Shatter and Dropkick.
Just when Shatter has Bumblebee and Windblade on the ropes; Izuku, Kyoka, Momo, and Mei show up in time with a jury-rigged artillery cannon to blow the Con's arm off!
The meeting between the Autobots and Top 10 Pro Heroes of Japan.
Izuku mastering Full Cowling way before the Sports Festival.
Momo planting a Tracking Device on Shadow Striker when the Cons kidnapped Bumblebee and Midnight. This enabled the Autobots and Heroes to locate and rescue them.
The Autobot/Hero raid on the Darksyde is filled with plenty of awesome moments.
Momo receiving a costume upgrade that drastically increases her options in a fight.
Snipe uses his Homing Quirk in tandem with Springer's weapons when he's in his Alt mode.
Denki going full-on ELECTRO on Blastwave for fatally wounding Sunstreaker.
The way the Vehicons were left terrified by the Heroes and their Quirks.
During their match, Izuku breaks out of Shinso's Mind Control thanks to the vestiges within One For All. Only this time, there aren't just eight, but NINE vestiges, with the tenth one being much more larger than the rest and having glowing red eyes. This implies that this version of One For All has a Cybertronian residing inside it.
While it was kinda terrifying, Kaida going into full dino-form on Bakugo was pretty awesome.
Izuku fighting and defeating Bakugo in the finals of the Sports Festival; with a special move inspired by Optimus Prime: IACON SMASH!!!
After receiving a message from Maccadam, the former bartender of Cybertron informs Optimus to keep an eye on Izuku and his Quirk as well as his "inner knight".
Maccadam must be referring to the Cybertronian vestige within One For All.
The fact that Kyoka got an internship offer from freaking Snake Eyes, of all people!
A villainous example, but the fact that some of the Quirkless villains were able to take on the likes of Edgeshot, Crust, Ryukyu, and Gang Orca with just the help of advanced technology is worth to mention here.
The students of Class 1-B get their time to shine by fighting Flatline and protecting Red Alert as he works on awakening the protoform.
Airazor delivering a Curb-Stomp Battle onto Skywarp upon first awakening.
Izuku, Kyoka, and Momo using the Mini-Con Council's weapon forms to attack Swindle is pretty epic.
In canon, Izuku learns from Gran Torino how to properly control One For All by mastering "Full Cowling". Here, due to already mastering Full Cowling, he gets to learn how to fight by not just Gran Torino, but from Mirko as well.
Snake Eyes finally making his appearance! Not to mention the way he sliced through Kyoka's school blazer with a wooden sword is just a demonstration of how strong he is.
The introduction of the international team: G.I. Joe.
Snake Eyes fighting and defeating an army of Vehicons on his own with nothing but his sword. This is even more impressive as Tiger Claw later reveals that all of this is due to his training and meditation techniques, not the use of a Quirk.
A more villainous example is Swift powerlinking with the Destruction Mini-Con Team and entering a Super Mode.
Kamakura unleashing the full power of his LightningBug Quirk and unleashes a can of whoop ass on Starscream and Barricade.
Izuku facing off against Frenzy once again and was able to take the nefarious Mini-Con down without much difficulty compared to the first they tussled against each other. Even Mirko was impressed.
Strongarm powerlinking with the Mini-Con Council to transform into her own Super Mode to fight Super Swift.
Just when Izuku was taken by Sky-Byte's jaws to be used as leverage for the Autobots to surrender. An unknown fighter jet shows up out of nowhere to save the young green hero-in-training. The jet turned out to be none other than the Autobots' second-in-command; Jetfire.
