Ever since I first found out about the Supergirl-Flash musical crossover, I have been hearing about this show called 'Glee' and that Grant Gustin and Melissa Benoist both appeared on it. From what I've read about it (which isn't that much) they are not the only people to have been in Glee and the Arrowverse. So, I was wondering, would anyone mind to create a list of people who have been in both? It doesn't matter if they only had a small appearance in one of them. Could anyone reply with this list? Please give the actors name, the characters name in both Glee and the Arrowverse, and perhaps a picture of them from both universes? Thank you. (That does include Grant and Melissa's characters, I know virtually nothing about them)