Grant Gustin
He is known for his role as Barry Allen / The Flash on the CW series "The Flash" as part of the Arrowverse television franchise , and for his role as Sebastian Smythe on the Fox series "Glee" . 
<triplet> Barry Allen / The Flash <subj> The Flash <obj> present in work <subj> Arrowverse <obj> from narrative universe <triplet> The Flash <subj> Barry Allen / The Flash <obj> characters <triplet> Glee <subj> Sebastian Smythe <obj> list of characters