The third game has a lot of them. * Among the idle animations are Natz playing Mario, Zelda, or Pokemon on a Nintendo DS, as well as an old grey-brick Game Boy. * There's an NPC early on wearing Kamina shades. Later, the man himself appears, alongside Simon and Yoko, who all give you quests. Kamina will even teach your characters the "Tera Drill". * Using Tera Drill the first time will prompt the user to say "Pierce the heavens with your drill!" The old flying robots with drills seen in the second game are now described with something like "They'll pierce your heavens.", and when they use a drill attack the first time, a character will remark that it's a good thing they don't have the spirit for a Giga Drill Breaker. Yup, lots of Gurren Lagann Shout Outs... * Yoko's quest net