Shredder's mom was Tokyo Rose.Miyoko was the right age and was just mean enough.
Shredder has a Villainous Crush on April.Why do you think he was always kidnapping her?
Krang is a Dalek.He was a refugee from the Time War who ended up transporting himself to Dimension X, and then because of his xenocidal tendencies got himself banished to 1980's New York, where he met Shredder. He also prefers operating within a robot, like a Dalek.
Zack is lying about his age in order to seem coolCome on, like you've never done that before.
The Shredder would have returned had the show been renewed for another season.Lord Dregg may have replaced old Tin Grin as the main villain in the last two seasons, but the theme song still had the lyric "When the evil Shredder attacks". Either they were too lazy to change the theme song or they really intended for Dregg to be an Arc Villain. Also, Dregg appeared to be Killed Off for Real in the final episode "Divide and Conquer", so it seems possible that the Shredder would have gone back to being the Big Bad along with Krang had the show continued.
Neutrinos are the Dimension X equivalent of humans.
Lotus is KaraiTurtles Forever proved that all versions of the turtles are part of The Multiverse. Lotus is Karai's counterpart in the 1987 universe with an Adaptation Name Change.
Casey Jones is/was a copHe is obsessed with the law and tried to arrest Krang instead of just beat him up. He could be a cop moonlighting as a vigilante or he could have become a vigilante after being dismissed from the force.
Someone working at Murikami-Wolf-Swenson must have really liked Jeanette from Alvin and the ChipmunksMWS animated/co-produced eleven episodes of Alvin and the Chipmunks for the 1988-89 season - the same year Irma was introduced on TMNT. Someone at MWS who worked on both shows must have really liked Jeanette enough to basically ripoff her design to incorporate into a regular character on TMNT. It's a double-edged sword; on one hand, the very obvious similarities between the two characters' designs (pulled-back brown hair, yellow hair accessories note , the large pink glasses, the oversized blue turtlenecks, the purple skirts, both being really clumsy characters) just screams, "We wanted our own Jeanette," yet on the other hand, the noticable differences (Irma having square frames as opposed to Jeanette's round frames, and Irma being boy-crazy as opposed to Jeanette being shy and withdrawn) speaks volumes as, "This character is not quite the same."