I'm Pen!!

Note 1: These are personal headcanons based on vibes and personal tastes, and they could change in the future! At this moment (Pride Month 2026), they are “canon” in my Main SM AU/HC. Note 2: For the younger characters, these headcanons describe identities and labels they will eventually discover or adopt while growing up, not necessarily things they are already fully aware of at their current age.

Ludwig: Ludwig is a trans man (Koopa?), and his pronouns are he/him. He has been aware of his gender since he was a small kid, and he was already correcting people and using his chosen name before turning ten years old. Being trans is generally viewed positively in Royal Koopa culture, or neutrally at worst, thus leading to a rather smooth transition experience for him. Despite that, Ludwig is quite reclusive about his queer background and will probably avoid talking about it if he can. Ludwig doesn’t usually use labels, but his sexuality falls somewhere between Bisexuality and Pansexuality, more likely the latter specifically regarding the romantic aspect.

Lemmy: Lemmy is a non-binary Koopa and uses he/they pronouns. He started actively exploring his identity quite recently, and thus he’s still trying out neutral pronouns. In the future, once they become a fully grown Royal Koopa, they will switch almost exclusively to they/them pronouns. Lemmy is Pansexual, not really caring about his crushes’ gender or presentation. He is also starting to question whether he may be polyamorous, but at this point he still hasn’t found an answer.

Roy: Roy is Bisexual, even if until a few years ago he basically presented himself as a *definitely straight man*. He has only recently started coming out of his shell, thanks to his sister encouraging him to explore his actual tastes and feelings without embarrassment. He still has a marked preference for women, but he is also allowing himself to appreciate the company (and looks) of handsome guys. Plus, he has become way less of a bully toward his siblings whenever they talk about queerness or wear colorful accessories.

Iggy: Iggy’s pronouns are he/him, but he also believes that gender is basically too complex to express with a single label. He doesn’t care much about it either, thus adopting the Agender label to summarize how he feels about himself. Iggy is both Aromantic and Asexual in a very strict and repulsed way. He panics if someone tries to flirt with him, and cringes a lot if put in a situation involving anything even remotely explicitly sexual (including the explicit and extremely graphic adult jokes Roy likes to make so often). His discomfort is entirely personal; from a biological and academic perspective, he is actually fascinated by the many different ways people experience attraction and repulsion. Despite this, he would not reject the idea of a platonic, aromantic relationship with someone if he ever found the right match.

Wendy: Wendy is Bisexual and has suspected that about herself since she was a little girl. However, most — if not all — of her dates have been with guys up until now. Secretly, she is a bit afraid of the idea of dating a girl, even if she would never admit it. Things feel easy with boys, but girls… it will take her a few more years to take that step. Spoiler? She’s going to marry that girl.

Morton: Morton uses masculine pronouns, and he’s fine with how people perceive him; though, he could adopt it/its as secondary pronouns in the future, feeling indifferent toward labels and gendered language overall. In fact, Morton never really put much thought into labels in general. His sexuality is a big uncertainty too. His siblings mostly assume he’s heterosexual, while Iggy speculates that his lack of interest in anyone could place him somewhere under the aro/ace umbrella. Morton doesn’t care at all about that stuff, but he is extra supportive of his siblings anyway.

Larry: Larry used to be that average boy convinced that girls were a boring waste of time, while also being extremely disgusted by the idea that “grown-ups” would date them. Now that he’s a teen, he’s experiencing his first crushes… on other boys. It will take him a few more years of self-discovery before adopting the Gay label, or maybe he’ll just opt for the more generic Queer label. Bowser Junior: Currently a pre-teen who really does not care about all that stuff. He feels good about himself, and everyone tells him that it’s normal to have little or no interest in other kids at his young age. Growing up, though, Junior will eventually realize that his long-term lack of interest in others fits perfectly under the Asexuality spectrum.