Question: What was the best known name of the voice in an American animated superhero film produced by Warner Bros in 2017?
Sentence (from "Matt Ryan (actor)"): Matt Ryan (born Matthew Darren Evans; 11 April 1981) is a Welsh actor from Swansea, best known as Edward Kenway in the Ubisoft video game "" and John Constantine in the NBC series "Constantine" and The CW series "Arrow", as well as voicing the character in the 2017 film "Justice League Dark".
Relevant evidence: Yes