I can play a sub male...would prefer he need to be brought to heel , so born outside the realm
I have basic idea for the bio but quite flexible is there a house in need of a slave and I can marry my character to fit
You might fine someone willing to do it. You are quite welcome to submit a character.
Males belong to a house if they are born in it or if they are bought in it. It might some advantage, like the Owl born slave may have been taught to read, write and count. Etc, but the men are not stuck in a house. When their mistress or the head of the house don't want them anymore, they'll pass by the Slavemistress' inventory, the Snake house, before being sold indiscriminately of the house they just left.
I hope I'm not being more confusing