"I was afraid of Jesse for so long that all I had was my fear... so I--I named that fear The Dragon. I lived with The Dragon for so long... it's all I had... but now being a part of the Quadrant, I'm gonna have something else... the type of power where I'll never be nothing again."
Looking to expand his empire, Diaz and Laurel meet with the Quadrant, a coalition of mafia families who run national organized crime. Meanwhile, after Oliver's recent decision, Felicity and Curtis double their efforts on building Helix Dynamics.[src]
Stephen Amell compared his involvement with this episode to McNulty from The Wire where the character made little to no appearances throughout the fourth season.[2]
The bar that Diaz meets Eric Cartier is called Hogan's Alley Bar. Hogan's Alley is a historical district in Vancouver. A largely Afro-Canadian area, it is most famously where a young Jimi Hendrix played at his grandparents' restaurant.
Diaz and Laurel go to visit Cartier in Blüdhaven, which in the comics was the city Dick Grayson protected as Nightwing.
Goofs
Diaz mentions having grown up in an orphanage, with flashbacks set 32 years earlier in 1986. In the United States, orphanages had been completely replaced with the foster care system by the early 1970s.
Laurel asks Diaz, "Well, if they're so powerful, then why didn't you come with any backup?" Diaz answers, "I'm not. I've got you." This makes no sense when compared to what Laurel asked. Diaz should have replied, "I did. I've got you."
Before Diaz and Laurel enter Villa Centanni, Diaz cocks his pistol. He then cocks it again after entering.