Call-Back: Casey remarks that they should have kept the cowboy copter when Donnie reveals the Turtle Blimp.
Cool Airship: Subverted, as everyone (sans April) thinks the Turtle Blimp is lame.
For Want Of A Nail: In "Battle For New York, Part 1", Splinter is the one who separates Donnie and Mikey when Mikey messes around with the retro-mutagen. Here, it's Slash and Leatherhead who separates them.
Inferiority Superiority Complex: Leo admits that one of the reasons why he antagonizes Slash is that he feels bad for leaving Malachi, Jason and Leatherhead in New York to fend for themselves while Slash looked after them.
