Fanged killers. Izutoga

Explanation of Deku's quirk:

Name: Transformation.
After swallowing even a drop of someone's blood,he can change into them. The more he knows about the person,the more precise the transformation. He can use someone's quirk without knowing it if his transformation is precise another but it's much easier to call on and control the more he knows about it. It has no time limit to how long he can be transformed but a hard enough hit can injure him enough to force his transformation off. His quirk makes him attracted to the blood of others,specifically if he knows a lot about them. If he got the blood without ever seeing anyone or only seeing them for a second (let's say he saw All Might in his civilian form then drank from his injury,causing hero form All Might to pop out and throw him off,he could only become a vague shape of civilian All Might but he could become a very accurate hero All Might because of how much he knows about him). He can't merge transformations,he can only be one person at any given time. He has fangs.