I know a popular BH6 headcanon is Hiro naming his future son "Tadashi" but I personally headcanon if Hiro were to have a daughter instead, he'd name her "Cassidy" in honor of Aunt Cass who raised him like a mother
ok first of all I LOVE the idea of Hiro having a daughter. And CASSIDY OMG THAT’S SO CUTE I LOVE IT!!!
I can just picture Hiro letting Cassidy paint his nails and having tea parties with her. He teaches her about robotics and how to absolutely destroy everyone in Super Smash Bros and Mario Kart. He invents these special markers that work like dry-erase markers on Baymax’s vinyl exterior so that Cassidy can basically use Baymax as her own walking canvas (which Baymax enjoys thoroughly, as it raises her endorphins).
Aunt Cass cries so much when Hiro tells her his daughter’s name. She’s so excited that she finally picks up a book on parenting so she can be the absolute BEST great aunt/grandma the world has ever seen. She teaches Cassidy how to cook and spoils her rotten with toys and trips to Disneyland.
The Nerd Squad all adore Cassidy, too, so she is basically the most loved child ever <3