I am a panromantic demisexual demigirl in my forties who 1) didn't even know those terms until recently, calling myself a bisexual who didn't want casual sex for a decade, and 2) found some memories from the late 90s of conversations with folks with ties to Mirage Studios, and I need to say this:
I cannot believe we as a fandom have to explain that the Ninja Turtles, fantasy creatures, can be headcanoned as Asexual not just because it is a real thing and not weird like some are saying, but because specifically the original Mirage Turtles were asexual, not attracted to humans, and as the series went on and they grew up, more concerned with their own unique bond as the only members of their kind over romantic relationships.
For example: Mike's fling with the Styracodon princess Seri was a manipulation, and Future Leonardo being with Raven Shadowheart was a choice. They're still asexual, even maybe gray or demi. We never got to know if Seri's eggs were Mikey's but we know he didn't have feelings for her.
In all the cartoon versions, we see various relationships happen which reflect some of the era and audience. Great example is 2012.
Actually, since Peter hated romance and Kevin was the one to sign off on the Next Mutation which was the straw that broke the camel's back for their split, we know Kevin is supportive of a lot of headcanons, even the actually weird ones, and thanks to my brain suddenly yelping "holy shell I remember that" I know how a lot of TMNT franchise crew members support inclusive headcanons even if they might not be canon. So someone saying "why are fan writers and artists making the turtles ace [or trans or NB], I think it's so weird" is absolutely one of the more bizarre things to come from the fandom. Because... they're turtles. They're mutants. Hell, to get super technical they're essentially genetically aliens, since the mutagen was created by aliens and fused with their DNA. They have more turtle in them than human. They're not human, the actual entire point of the characters, so the other entire point is how they learn to become psychologically and socially human, which rules to follow, which morals to have that don't need to be human. Thus, it extends to fans who create Alternate Universes and Canon Divergent worlds. And asexuality, the ace spectrum, is a real world thing that has always existed even if we didn't always know the words. To try to insist that these not-real fantasy creatures - ones that don't exist, have no bearing on real life except our imaginations, and should't be so restricted - cannot represent orientations and identities for fans who share with fans is, at the very least, disingenuous, controlling, upsetting, and exasperating.
I didn't spend nearly thirty years fighting oppression as both LGBTQIA and disabled to see my my favorite fandom pushed against by aphobia, transphobia, and bullying in general.
Although, really, I am a fool, I should have seen all this. I know Tumblr is completely different than other platforms, completely different from my Olde Fann favorites like Livejournal and the old Geocities forums, and online social communities are now faster than, say, my ADHD thoughts in a hyperfocus, but I still want to be Old Man Yells At Cloud and Get Off My Lawn You Kids when it comes to this very specific fandom thing and I totally see how weird that is on its face. I've been studying neuropsychology a lot, I usually notice my own weirds and faults more than usual.
Anyway. Aaanyway. Uh. So. *exhales*
Haa, panic attacks are the worst, aren't they? Also, I gotta stop believing the depression and anxiety monsters in my head, they take up too much real estate and I'm tired and getting too old for this weird AAAAAA-ness.
(One of my inner voices is like, "Woman, you are talking about ninja mutant turtle creatures that were created as a parody of gritty superheroes, who are you calling weird and AAAA?" and all I can do is shrug with a "you got me smile" and a long sigh. But I try, oh my god do I try, all the time, in this institution - *pause to break into song I said hey hey hey* - and I keep learning from my fictional sunshine child as I go so I can keep up with all the So Which Of My Identities Is Being Threatened In Society This Time discourse and especially the memes. All the memes.
I am a cautious optimist, after all. Nihilistic Optimist maybe? All I know is my entire life is multiple piles of junk cluttering a small room and everything is shiny even when it's hidden in shadows. Just smile until it feels better.