EXCLUSIVE: Oliver Queen is getting a new ally. The CW’s Arrow has cast Josh Segarra (Chicago P.D.) as a new series regular for Season 5. He will play Adrian Chase, Star City’s new district attorney and an ally of Mayor Oliver Queen (Stephen Amell), who aims to clean up the streets through the legal system.

Adrian Chase and his alter ego the Vigilante first appeared in the 1983 New Teen Titans Annual #2. A New York City district attorney whose family was killed by mobsters, Chase sought justice in his own way. In the comics, there are several characters operating under the name Vigilante. One of them has narrative ties to Deathstroke, who was a major character during Arrow‘s second season, and the CW’s DC shows have tended to mix and match material from various DC comics sources in adapting characters for these shows.

Segarra is joining fellow new Arrow regular, Echo Kellum, who is being promoted from recurring. The show is beefing up its roster after recently bidding farewell to series regular Katie Cassidy.

A graduate of NYU’s Tisch School of the Arts, Segarra is starring as Emilio Estefan on Broadway’s On Your Feet. He was seen in Judd Apatow’s feature Trainwreck and as Billy Cepeda in Sirens on USA. On stage, he starred as Boland in Second Stage Theater’s Dogfight, and as Mick in the off-Broadway and Broadway runs of Lysistrata Jones. On TV, he also had a major recurring role on Chicago P.D.

Segarra is repped by Abrams Artist Agency, ATA Management and attorney Ryan LeVine.