Question: ON what date did the man who played Michael Sullivan, Jr. in Road to Perdition first appear in The Adventures of Supergirl
Sentence (from "List of Supergirl characters"): The series stars Melissa Benoist in the titular role of Kara Zor-El / Kara Danvers / Supergirl, as well as Mehcad Brooks, Chyler Leigh, Jeremy Jordan, David Harewood, and Calista Flockhart, with Chris Wood, and Floriana Lima joining in later seasons.
Relevant evidence: No