When Huntress follows Black Canary into Blüdhaven, Nightwing can be seen on a rooftop patrolling the city.

In the beginning of the episode, Shatterfist is fighting Hellhound.

Roulette: Lex, darling. I’m having some serious financial problems, and I’m afraid you’re to blame.
Lex Luthor: Well, don’t look at me to bail you out, Roulette, I’m the one who skims you!

Roulette: You're playing with fire, witch!
Tala: Who's playing?

Roulette: The new Metabrawl! All girl fights, all the time! We’ll call it “The Glamour Slam” or “The Belles of the Brawl”!
Sonar: “Chickapalooza”!

Question: (about Black Canary) The deeper mystery here is "why do you even care?" Isn't this the woman who beat the snot out of you a few months back?
Huntress: She got a lucky shot in! (pause) Okay, five or six lucky shots.

Huntress: (over a cellphone) So, what are you wearing?
Question: Blue overcoat, fedora...
Huntress: You really stink at this.
Question: ...orange socks.

Roulette: Let the pain begin!

Huntress: (to Black Canary) They've had you up every night working the arena. No wonder you've been fighting like a girl. (pause) You know what I mean.

Huntress: Looks like we're in this together.
Black Canary: If you call me "girlfriend," I’m gonna dropkick you into the next county.
Huntress: Now, don't get all sentimental on me.

Vixen: I don’t wanna hurt you, Shayera.
Shayera: But I wanna hurt you!

Shayera: I don't think I wanna know.
Vixen: We're all in a cage match fighting to the death.
Shayera: Yeah! See?

Vixen: Anybody got a plan?
Shayera: Yeah, try to stay alive.
Huntress: Anybody got a good plan?

Sonar: In another thirty seconds your brains will be so scrambled I’ll be able to serve 'em up with bacon.

Huntress: (pointing a crossbow at Sonar) Do I kill the signal or you?

Huntress: You know, I was totally whipping your butt when they caught us.
Black Canary: In your dreams.
Huntress: Like I’d waste my dreams on you.
Black Canary: We can settle this right now.
Huntress: After all the mindless brutality we’ve seen tonight? No thanks.
Black Canary: Yeah, I hear you. Bad enough most people think superheroes settle their problems with their fists.
Huntress: Like we’re all a bunch of muscle-headed stereotypes.
Black Canary: We’re better than that.
Huntress: Way!
Black Canary: Two falls out of three?
Huntress: You’re on.

The Question: Aha! As I suspected. 32 flavors!

The Question had just found the 32nd ice cream flavor of Baskin-Robbins, the chain of ice cream parlors best known for its "31 flavors" slogan (one for every day of the month).

Roulette:

In the DC Comic series JSA, Roulette did a tournament featuring the members of the JSA. Her main target was Mister Terrific. That storyline was written by Goeff Jones two years before this episode was made.

"Double Date"

Question: (about Black Canary) The deeper mystery here is "why do you even care?" Isn't this the woman who beat the snot out of you a few months back?

The Question is alluding to the time Black Canary fought the Huntress.

"The Cat and the Canary"

Black Canary: (to Roulette) I should’ve taken you down last time.

Black Canary is referring to the time she and Green Arrow infiltrated into Roulette's underground gaming arena to break Wildcat out.

The closing credits feature clips of the upcoming episode "Far From Home."