The two CW superheroes joined Supergirl actress Melissa Benoist on the program where they all showed off their best smoulder and their secret powers.
Grant and Melissa, who also both starred on Glee, also mused about a possible musical episode for Supergirl and The Flash.
Check out all the clips below!
Melissa Benoist & Grant Gustin On A Possible Musical Episode
FYI: Stephen wore a Raffi t-shirt.
The Secret Powers Of The CW Heroes
The CW Heroes Give Their Best “CW Smolder” Look
Stephen Amell Is So Buff, He Intimidated Grant Gustin