Restless in the aftermath of the Kraang invasion, Casey embarks on a solo assault on New York's criminal underbelly, and gets tangled up in the Shredder's latest plans.
- A Day in the Limelight: Casey, as penance for mostly sitting out "Battle for New York". The Foot also get some focus here in a similar vein.
- Badass Biker: Shredder has a sweet looking ride.
- Badass Crew: The Foot has attained enough members to qualify as a Badass Crew by now.
- Big Bad: Shredder
- Co-Dragons: Tiger Claw, Hun, and to a lesser extent Bradford, who mentions he's in charge when Tiger Claw isn't around.
- The Brute: Xever and Rocksteady.
- Evil Genius: Stockman
- Bunny-Ears Lawyer: Bebop
- The Cameo: April and Kirby briefly appear helping feed the citizens of New York.
- Canon Immigrant: Hun makes his debut, heralding from the 2003 series.
- Continuity Nod:
- The Turtles return to the lair they'd previously abandoned.
- The original Purple Dragons have been repeatedly acknowledged as the Turtles' least threatening foes until now.
- Karai is seen being held in Stockman's lab.
- Shredder mentions he's got control of the Russian mafia now that he's got Steranko in his service.
- Casey reveals he's not too happy about being left out of the action in the previous episode.
- Curbstomp Battle: Raph accurately predicts that Casey's challenging Shredder will result in one of these. Earlier, Hun delivers one to Casey.
- The Don: Don Vizioso, leader of the Italian mafia. Shredder himself is bringing all the mobs of the city under the Foot's control.
- Expy: Vizioso, being a monstrously obese and disgusting gang lord with control of a healthy amount of the city, is pretty reminiscent of Jabba the Hutt. In the recent Darth Vader series, Vader similarly brought Jabba to heel after the Hutt mocked him; much like how Shredder cows Vizoso here.
- Freeze-Frame Bonus: Mikey's Chee-Z Balls' ingredients list
is... bizarre, to say the least.- Vizioso has a nude painting of himself on the wall behind him. Fan Disservice, to say the least.
- Groin Attack: Casey performs one on Tiger Claw. Previously, Hun hits back a hockey puck at him in that area as well.
- Idiot Ball: Casey, through a combination of his Leeroy Jenkins attitude, Honor Before Reason, and feeling left out of the action in previous episodes, gets hit hard with this trope. The worst example is when he informs the turtles of failing to stop the Purple Dragons and gets mocked for it, forgetting to mention that they have a new, decidedly more competent member in their ranks that could have made a better case for him.
- Jabba Table Manners: Don Vizioso during his meeting with Shredder.
- Know When to Fold 'Em: After Shredder slices up the meatball he was about to eat as a sign of what'll happen to him should he not fold to the Foot, Vizioso quickly agrees to join up.
- Lack of Empathy: Don Vizioso casually references The Kraang Invasion and mentions how it's funny that it turned out to be fortuitous for "businessmen like us."
- Leeroy Jenkins: Casey is asking for trouble in this episode, and he gets it, alright.
- Mind-Control Device: The end of the episode has Donnie discovering that Shredder is attempting to make a mind control serum. The fact that Shredder now has a chemical productions factory in his control implies some large-scale plans...
- Mythology Gag: Casey's classic introduction line is used when he confronts Bradford and Xever.
- Casey holding his bats between his fingers before flipping them up to his hands is a reference to when he did the same thing before facing the Shredder in the comic books.
- Number Three: Bradford mentions that he's field commander whenever Shredder and Tiger Claw aren't around, making him third in command of the Foot.
- The Rival: Hun to Casey.
- Shout-Out:
- Take That!: Donnie makes it perfectly clear how much artificial chemicals are in foods like Mikey's cheesy snacks.
- What the Hell, Hero?: Raph calls out Casey for his foolish assaults on the Foot, and especially on Shredder. Bradford is incredulous that Casey even uses his own name when confronting him, exposing his identity to the Foot.
- You Can't Go Home Again: Averted. Despite the fact that the Kraang know the location of their old lair, the Hamato Clan moves back in, apparently confident that the Kraang won't return after being banished to Dimension X in the previous episode.
- You Have Failed Me: Shredder offhandedly warns the recently successful Hun that he doesn't take failure lightly from any of his subordinates.
