There is Meiling Li,Syaoran Li, Sakura, Eriol,Spinel Sun, Ruby Moon, Cerberus (Kero), Tomoyo, Clow Reed, Yukito, Toya, and Yue. These are just the important main characters that are found.
Animehere.com goes from episode 1-70 and has both of the movies...it is free. At the beginning some of them are megamovie videos but then they have a second option which is unlimited! Hope I was able...