Well I usually use the clone tool and clone the character I don't want out. Like I did in the picture below. if you look closely you can see some flaws in how i did it. like with the leaves. Sometime you can select some background and make a copy of it to cover up a character. Or you could just take the characters you do want and use a different background. Like for example I could have just used a picture of Grandmother Willow with no other characters in it. then just select pocahontas and tarzan and put them in the picture.
