When he was a kitten he would walk around a knock things off desks. Now that he's older he's going outside but he's getting into fights with other cats. He's getting neutered next week but do you think it's too late for him to not be a dick?

my cat beats up my dog allll the time. my dog will walk around the hallway corner and the cat will pounce on his back and hold on. it's so awful what a little dick my cat is.

My cat is like getting cuts all over him though.

dont let your cat go outside......

Yup.

We kept him inside the past day and he's been pretty calm, just lying around. Of course he meows a lot whenever we go near the door but I'll think he'll be ok about it.

copying his 'master(sam93)'?

Like said above don't let him out to prevent him from getting hurt, he probably gets into other street cats territory and that's how the fights break out.
Make sure he has lots of toys to keep him busy and play with.
That should do it

GET A MEANER DOG! =)