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Dillon Casey has joined the cast of The CW's Nikita, TVGuide.com has confirmed.

The 27-year-old Vampire Diaries alum, whose credits also include Torchwood: Miracle Day and Being Erica, will play Sean Pierce, who is both a foe to Nikita (Maggie Q) and a possible future love interest to Alex (Lyndsy Fonseca).

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As we first reported, Pierce is a handsome, upstanding Special Forces commander, who is tasked by Oversight to observe and report on Division's dealings. As he attempts to recover Percy's black box, he'll find himself caught between Nikita and her former protégée, Alex.

Nikita's second season debuts Friday, Sept. 23 on The CW.