Criss plays Blaine, a gay student and glee-club star at Dalton who befriends Kurt. Previously best known for a "Harry Potter" musical parody that made it to YouTube, Criss is fast becoming a highlight of "Glee" and reportedly is in talks to become a regular next season.
To catch Criss, Colfer and the Warblers take the "Glee" Train, look below: