They’re canonically intersex, which is the scientifically accurate AND politically correct term for what people would call a hermaphrodite (no true human hermaphrodite exists on record verified by science, all supposed cases were too long ago to verify).
Intersex came into the spotlight because they are prone to being abandoned to orphanages, and said orphanages are prone to having the condition surgically corrected as toddlers. This causes MASSIVE problems for the kid when they hit puberty. For example, a kid who looked like they had a vagina and a penis being “corrected” into male suddenly finding out they are actually a girl when their “scrotum” fills with menstrual blood and causes an infection that almost kills them. Or a girl suddenly having testes drop through her “vagina”. Religious orphanages that had these surgeries done often won court cases brought by adoptive parents suing for re-corrective surgery and medical expenses. Despite intersex cases being the exact opposite if transexual cases, the fact that it was religious institution VS sex problem meant conservatives largely sided against intersex folks, so LGBTQ+ took up their mantle of representation.
Unless you are a political tribalist moron, you’re probably not against intersex folks. But by the same token its REALLY hard to talk about them without explaining penises and vaginas, so kids shows tend to just keep them lumped with gay and transexual folks as “the third thing that we love and accept”, providing ammunition for haters.