Copy allows Neito to duplicate and use another Quirk after coming into contact with the Quirk user. He does not need to make contact with much, as a few strands of hair seem to be enough for his Quirk to take effect. After doing so, Neito gains full access to the Quirk he has copied and can use it however he likes. He also seems to instantly know how to activate any Quirk that he copies, even if it is his first time seeing or using the Quirk. This Quirk also allows him to copy multiple Quirks.
However, a drawback is that Neito can only use the Quirk he has copied for five minutes and after the five minutes are over, he loses access to that Quirk. Also, Neito cannot simultaneously use two or more copied Quirks at the same time and thus can only use one copied Quirk at a time.
So far, Neito has been shown copying the following Quirks: