Thank you so much Rene! Oscar is my resident cat, Mowgli is the cat
that is comming, he should be used to me ( he's also my cat from
before, I had to move so a friend has been looking after him). Oscar
was adopted last week, because of these issues with the other cats in
his old home, one of them being making this less dominate cats life
miserable. He was horrible to him and I have never heard of a cat
sitting on another cat and urinating on him, I understand that he was
just extremley territorial towards this one cat, not the others, and
was removed from the home as they both were miserable, and given to
me.

Mowgli is set to arrive by the end of this week, I have read about
keeping them seperate, introducing slowly, scents only at first, and
not pushing it. I know Oscar (the cat I have just adopted) is a very
sensitive cat, where as Mowgli I think is more of an Alpha cat, I have
never seen him not get along with any cat in his enviroment OR theirs,
in less than 2 hours, he loves playing.

Since Oscars time with me (about a week) everything seems to be
normal, but he really only wants to stay with me or in my bedroom
unless I go out then he will follow skittishly if he is awake and up.
There is no urinating anywhere or anything like that, all habits are
normal.

I guess my concern is how do I let this not inhibit this adjustment
for Oscar? I know he could easily turn, and I'm concerned. I'm
expecting a minor setback but hope that he does not totally freak

Also, this peeing on other cats, is it something you have heard of?
Why would he mark his territory directly on another cat that he hates,
and aparently be very very mean, and since Mowgli does so well, am I
correct in assuming that since he won't let Oscar push him around,
things should be ok? (If introduced properly)

What does this urinating on other cats tell me about his psychie? If I
see this behavior in my own home, I will definatly take him to the
cet, his behavior is more extreme then the cat you describe, so I'm
hoping with patience he will not be so skittish. I have a herbal
relaxant from his mother.. should I give it to him the first few days?