I recently got two lovely littermates, a beautiful female tabby and a seek all black male.
I've read about how cats can get pregnant from multiple toms and I think this might be case here. I'm thinking maybe he's half Siamese?
Boy cat is extremely vocal, from time to time does that weird Siamese meow, follows me everywhere, is very bossy, tries to open the cat food drawer with his paws (he's 6 months old!), and kind of looks like a Meezer; big ears, pointy chin, sleek body, small head, but black?