media_removed_toofab 2013
With great power (and a role as a superhero) comes great responsibility (to bulk up).

"Glee" alum Grant Gustin is the latest to suit up as one of DC Comics' most recognizable names, The Flash, for an upcoming CW series of the same name.

The actor was spotted on set in Vancouver on Tuesday, where he was photographed both in and out of his red, full-body costume -- giving fans a peek at his fit (and kinda pale) physique as they await the show's premiere.

The men of the CW have a long-standing history of showing some skin. Factor in the fact that Gustin is also playing a legendary comic book character, and it almost goes without saying that the gym is his new home away from home.

toofab's Brian Particelli caught up with the 24-year-old earlier this summer at Comic-Con, where he revealed what it felt like to put on that costume for the first time ... and how he's been training to bulk up. Check out the interview below!