Grant Gustin even sounds a bit like Stephen Amell as he announces, "My name is Barry Allen, and I am the fastest man alive"
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Grant Gustin stars as the fastest man alive in pilot
The actor played the superhero in the TV series that aired on CBS
He joins the WBTV project's growing cast led by "Glee's" Grant Gustin
The role could transition the star into a spinoff series on the network