Tensou Sentai Goseiger/Fridge

Fridge Brilliance

 * Brainwashed and Crazy Gosei Knight is specifically referred to as Dark Gosei Knight. Think that excludes him from the villains' movie Theme Naming? Think again.
 * Additionally,
 * Buredoran's third form is called Buredo-RUN. The Matrintis are machine based, and RUN was the code used in the BASIC computer language to run applications.
 * Why do mecha get introduced in relatively quick succession within the Warstar arc? Because it's structured like a miniature version of Sentai arcs, complete with a Super Daibouken-esque mecha in the form of Hyper Gosei Great.
 * The cameo for the Goseigers and Double is very fitting...if you link the two anniversaries, Kamen Rider OOO and Kaizoku Sentai Gokaiger, this leaves Goseiger and W as Rider-Sentai counterparts.

Fridge Logic

 * Preemptively addressed with Gosei Knight - obviously he can't be shown pressing the Leon Cellular when he's in Headder form, so we see it floating in Hammerspace with the buttons responding to his thoughts.