Imperial Locker: I left this reference untouched in hopes as an avid DQ9 player that maybe there’s one or two people on the planet who WILL get this, but the Imperial Locker is a reference to the Kawasaki Locker, a grotto (randomly generated dungeon) map in Dragon Quest 9 with a lot of high-rank chests that can be RNG manipulated to give out nearly any good item in the game.
I am an avid DQ9 player and I’ve still never heard about this. Granted I never went to an event for the game or anything, but I’ve searched up both grotto stuff and RNG manipulation many times before and never found it.