Yakko Warner- He's awesome. Great sense of humour, in tact with his childlike side, yet the most responsible of the Warner trio.
I dunno. I'm in l-o-v-e with Yakko... and Rob Paulsen, his VA.
Danny Fenton/Phantom- Not so much anymore, but man oh man. He was amazing. Instant attraction USA. :3
Chester McBadbat- We all remember Chester, right? He was so cute; way better than Timmy, IMHO. I thought he had a deep character, or deep for a children's cartoon, anyway.
I think that's it. Be prepared for more, though.