Gender
For this, get a number generator and set it from 1-5.
I have written the possible pronouns your OC may use next to each gender, but it is pretty much up to you.
1 - Non-binary (does not identify as any gender) - they/them
2 - Tom - he/him
3 - She-cat - she/her
4 - Transgender she-cat (born as a tom, is a she-cat) - she/her
5 - Transgender tom (born as a she-cat, is a tom) - he/him
Obviously if you're not happy with anything, feel free to change it! This is made as a guide, and you don't have to choose everything you get.
Sexuality
Again, use the number generator and set it from 1-10.
This will affect the gender of your mate later on.
(I am trying to make this generator as inclusive as possible, if you do not like the idea of giving cats a sexuality then please skip this part!)
1 - straight
2 - gay/lesbian
3 - aroace
4 - bisexual
5 - straight
6 - gay/lesbian
7 - straight
8 - pansexual
9 - gay/lesbian
10 - bisexual
My OC, Tansynut, is a she-cat and is pansexual.