Hi! after the koopalings's dad (Oliver), I made koopalings's mother, her name is Auren Koopa, also she is the mother of all the koopalings (Most of them are half-siblings because they have the same mother)
On the image that I made, I made some (little) headcanons about Auren, she is look like Elizabeth from the movie "MONSTER HOUSE".
Some (others) headcanons about her:
> Auren and Oliver met in high school, at that time they fell in love, so much so that after finishing college, Oliver trained as a guard at the koopa forge while Auren graduated as a biologist.
> As already shown, she is straight ally demisexual, she only gets involved with male koopas and feels a somewhat spiritual connection between koopas, but she ended up having many affairs with koopas, her first was her husband Oliver Koopa, after his death, Auren had relationships with other koopas, but they left her when they discovered she was having children.
> Auren doesn't like any of her children, she kept saying that they ruined her beauty and relationships with other guys, she wasn't even the one who named the Koopalings, Oliver even gave the names to Ludwig and Roy, but he wrote the names of Iggy and Morton (Actually, the name Morton chose was Bowser, I can say that he is terrible at choosing names for children, that's why he gave his name to his son, when Morton hatched Bowser, and Ludwig and Roy, they were looking at a photo of Bowser's father, the koopa saw that the baby looked like his father and suggested the name), the Koopalings chose the name of the rest of her brothers, she also hated Bowser a lot (and Clawdia too).
> Ludwig and the others don't like Auren at all, she was never present in his or his brothers' lives, she simply left them in the hands of Bowser and Clawdia, after Larry was born, she simply left! He didn't warn anyone and left his children behind, Larry didn't even know his mother, he doesn't even remember her (nor his father, Auren's other and penultimate lover).
And there she is, in future works maybe she will return to Bowser's castle or posts about the history of the Koopa family, bye!