I've heard it said several times that Siamese cats are mean. To be absolutely honest, I've never encountered a "mean" Siamese, but too many people have said this to me for it to be an urban legend. My boss once dated a lady who owned a Siamese cat, apparently, every time he went go get close to this lady, the cat would attack him. LOL.
I have two Siamese a Modern Siamese & a Traditional Siamese. The Modern Siamese is definitely very uptight. He (Obee) is an absolute mummy's boy, and in the old days, when he used to sleep in our bedroom with me (we have had the bedroom taken over by a Burmese), when my husband would come into bed (which was always after me), my boy would growl & hiss at him. I must say though, not once in his life has he ever bitten a human....he's bitten the other cats plenty of times though.
I have another cat who is very special to me called Nicholas. If I want my Siamese to come, I call out Nicholas's name, Obee is absolutely convinced that if I'm calling out Nicholas's name he's about to get something really special, so Obee had better come in his place. LOL.
My Traditional Siamese doesn't have any particularly Siamesey traits. She doesn't talk much, and when she does, it's quite a sweet meow, not like Obee, who has that typical deep Meezer meow. She's not jealous either.
Without pidgeon holeing a breed too much because I realise that you can't say all cats of a certain breed are alike, but this is speaking from my own personal experience & from those I know who also have Meezers. I think one thing with Siamese cats is that they tend to bond with one person. Our Burmese cats love EVERYBODY. They would go off & live with the first person who picked them up, and not take a backward glance at us. They adore my husband, but they adore everybody else too. Obee will tolerate other people, but I'm his number one human, and I honestly don't think anybody else could replace me. He just took to me from day one, and it's been like that ever since. This frustrates my husband no end. He tries so hard to win Obee over, but never has any luck. Obee tolerates my husband at best.
When I got Obee, I was really shocked by just how different he was to other cats. Two friends who owned & bred Siamese found it incredibly amusing to witness my learning curve. I'd say "I think there's something wrong with Obee, I caught him doing such & such today"...they'd just laugh & say "oh, did we forget to tell you that Siamese cats like to do that?" My friend who has a Siamese thought he was the most insane cat on the planet, until she met Obee...and he has a lot of similar traits to her cat. I think she was relieved to see that it wasn't just her cat who acted this way.
That's why I love Siamese, they're unique. Don't get me wrong, I love my moggies & my Burmese too, but my Siamese boy is just that little bit different to the rest. I had a friend stay with me for a couple of weeks, she'd never seen a Siamese cat before. One day she turned to me & said "it's like living with a child being around Obee". I'm not sure if she meant that in a good way or not. LOL. There are times when I have to put him outside in the enclosure because he winds me up so much that I actually worry about losing control with him. He is my most annoying cat, that's for sure...but he's also my special boy. The other cats don't seem to push my buttons the way he does.