No, those are dwarf planets that you are thinking of. Pluto is still considered a planted, but it was demoted to a dwarf planet, so there are 8 "regular" planets in our solar system.
Really? They don't qualify to be "full" planets? Huh, I guess that's why they let them have kinda dorky names. Well, Ceres is a nice name actually.. But Xena is a little too cliché
"Charon" is just too close to "Charo"

I just read up some more on it, and Ceres is really just an asteroid orbitting Jupiter, but because of its round shape and mass they decided to classify as a planet. Charon is just a moon of Pluto, and now both will be referred to as "Plutons." And then "2003UB313" a.k.a. "Xena" is a Pluton as well.
Pretty cool stuff. Now, we must locate Lurr, Ruler of the planet Omicron Persei VIII!