Matt Dagger

Matthias "Matt" Donovan (born May 3, 1977), is a criminal serial killer from Earth-2. Earning the nickname Matt Dagger due to his excellent handling of pointy objects such as daggers, Matt became insane and went after superhumans as the Mad Dagger. Employed by Neo, Matt traveled to Earth-1 to wreak havoc and kill Ben Carone/Zero but failed and was incarcerated.