Bruce Wayne headcannon that he’s a stealth trans man, and as an extremely considerate father does, he’s able to keep things for the Batgirls that they wouldn’t even assume he knew about.
When Steph first became Robin, she was a bit terrified about her suit. She worried it wouldn’t fit right, or that she’d need to explain her need of a bra to Bruce. Or worse, the function of a bra. He had multiple variations (around her size, as far as he could guess) of sports bras made with industrial strength fabric. And they weren’t just compressing and functional, they were comfortable.
“I wasn’t 100% sure about the band size you’d need, but these should last a while. And they are so breathable.” Steph didn’t want to question why he knew that, she just said thank you and moved on.
Cass didn’t get a consistent period until moving in, so even while knowing what it was, it was lot for her. The second Bruce heard about her struggling from Steph, he showed her the closet in the manor with various period products. Not just multiple types of tampons, pads and liners, but cups and underwear and wet wipes. All the Midol and heating pads you could dream of.
“Some people prefer pads, but I preferred tampons because they’re more discreet. I have just as many options for both. There’s organic, allergenic friendly, pads for heavy flow, I think there’s some Diva Cups in the back, too. If you ever need pain relief, I’d still prefer you to ask Alfred, but there are plenty of options. Whatever you need, whenever you need it, it’s here. Or come to me, I’ll get you more. There’s no reason to have any shame around this.” Cass didn’t quite catch the part where he mentioned his menstrual product preferences, she just grabbed a Diva Cup, wet wipes and some underwear. Then she promptly skittered away, likely embarrassed, Bruce assumed.
One time Babs was complaining about women’s pockets in clothes. “Preaching to the choir, so glad I switched to men’s.” And instead of explaining himself, he gave Barabra tips on finding men’s pants that fit an AFAB body better.
At one point, Tim couldn’t stop complaining about how unfair it was that Cass got to come home early from patrol and eat chocolate damn near monthly. Or why Steph got to lock everyone out of her room around a similar time. Something about him being tired, too, and Bruce never brought him Snickers and or let him shut the entire family out.
“When you start bleeding because your body decided to fuck you over once a month for life, then we can talk.” And Tim couldn’t figure out why Bruce wasn’t on his side.