By James Hibberd
Updated February 10, 2014 at 12:00 PM EST
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CW’s Arrow spin-off pilot has added actor Tom Cavanagh to the cast.

Cavanagh will play “Harrison Wells” on The Flash. He’s described as “a rock star in the world of physics, the mind and money behind Central City’s S.T.A.R. Labs Particle Accelerator. He becomes a pariah after the lab’s explosion, but he charts his path to redemption when he discovers that his failed experiment had the unintended consequence of creating the world’s fastest man (Grant Gustin).”

Best known as the star of the 2000-04 NBC series Ed, Cavanagh has also had arcs on ABC’s Scrubs and Eli Stone and USA’s Royal Pains (and, lest we ever let him forget, a starring role in CBS’ short-lived and unforgettably titled Love Monkey).