Monoma was able to combine three Quirks: Tetsutetsu's (Steel), the villain's (Blocks), and a civilian's (Clouds/Steam). It is now known that Monoma currently has the ability to "Combine Quirks." (Previously, his limit was that he could only copy four Quirks, but he could only use one at a time. It took him 10 seconds to switch between them, and he could store them in his body for 10 minutes, with a limit of 5-10 minutes. However, he could not copy accumulation Quirks (e.g., One For All, Rewind, etc.), and he was limited to his body, requiring physical contact, which was inherently dangerous.) (Possible Functioning: He can turn off (deactivate) the Quirks he copies at will and also differentiate between them. (e.g., since he couldn't use several at once, but could copy four Quirks simultaneously, it's possible that Monoma's Quirk could turn off the Quirks he copies at will.) Knowing which one turns off means that when Monoma switches between them, he turns one off and turns on the other (since he had four copies and could only use one at a time). Currently, it's known that he can "Combine Quirks," and I suppose his time has doubled or more. That is, if he can use three Quirks simultaneously, his storage, copy, and recharge time limits must have also evolved exponentially, right?
1) Hypothetical Scenario (on a mission): Monoma could use Kosei Tsuburaba's Quirk (Solid Air) to slow his fall. He then combines Tetsutetsu's Quirk (Steel) with Mina Ashido's Quirk (Acid): his body becomes coated in a thin, shiny metallic layer that secretes acid on its surface—an active defense that neutralizes impacts. (He would be combining his Quirks into a single structure, alternating and mixing them in real time.)
"Steel + Acid (Tetsu + Mina): The steel prevents the acid from damaging his skin, creating a corrosive armor that destroys any melee attack."
2) Hypothetical Scenario (perhaps against Bakugo): Monoma. At that moment, he could combine four Quirks: (Poltergeist) to control the environment, (Size) to adjust mass, (Steel) to withstand pressure, and (Solid Air) to channel momentum. The result: a shockwave that doesn't destroy, but rather reflects Bakugo's energy, returning it in a curved trajectory—pure technique.
3) Hypothetical Scenario: "Multiple Synchronization": Monoma touches the ground with his left hand, activating Reiko's Quirk (Poltergeist) to raise rock fragments. Simultaneously, his other hand glows with Yui's Quirk (Size), altering the size of the suspended fragments. An instant later, the air vibrates with Shoda's Quirk (Twin Impact), doubling the momentum of each thrown rock. The rocks explode against their targets with brutal force, yet without chaos. Every movement is precise. Calculated. (In short, he would be fusing them as if they were one.) "Multiple Synchronization" (Poltergeist + Size + Twin Impact): would perhaps be the perfect definition of what in comics we would call a "coordinated multi-attack." By combining these three Quirks of Class 1-B, Monoma would cease to be a mere copycat and become a conductor of the battlefield. Use telekinesis to lift ammunition, alter physical mass to change dynamic weight, and Twin Impact to create devastating secondary acceleration.
4) “His Quirk can copy what he touches. But perhaps… it can also copy what he understands? That is, instead of directly copying, he could imagine the internal structure of a Quirk he already knows, for example, Juzo Honenuki’s, and try to reactivate it without recent physical contact. In other words, he could reactivate it through memory. My theory about ‘copying by memory/visualization’—my reflection on how Monoma’s Quirk works—has some scientific basis, or perhaps a lot, in real science, specifically in sports psychology and neuroscience. Guided visualization activates the same areas of the brain as actual physical action. If Monoma’s Quirk alters the molecular or genetic makeup of his body to replicate a factor of a Quirk, why couldn’t his brain ‘remember’ that subatomic structure and replicate it for a microsecond through extreme concentration? (Although I don’t know much about science, and I’m not a big fan of it, so this is just a reflection on his Quirk.)”
Monoma is so cute. And regarding the "Copy by memory/visualization" theory: your musings on how his Quirk works are fascinating, especially since Monoma's Quirk is also mental. That is, Monoma has the ability to understand Quirks instantly. (It has to be that way; Monoma shouldn't be able to use Bakugo's Quirk without inherently understanding it as an accidental power based on a chemical reaction instead of "the power to make explosions," otherwise.)
