Adaptational Early Appearance: While in the parent series the Turtles do not know about the Utrom until after they undo the Kraang invasion, here Miwa and April meet their first Utrom before the events of "Within The Woods".
Interdimensional Travel Device: Miwa finds a hexagonal puzzle box hidden away by April's uncle Augustus, a box that is revealed to be a portal-device to Dimension X.
Mythology Gag: April's Uncle Augustus "Augie" O'Neil and the Utrom Mortu were Original Characters from the 2003 series, the former being a man who went missing when he went snooping into the Kraang Conspiracy and the later an Utrom freedom-fighter who stole one of the Kraang's Irma-suits.
