Pokemon Diamond: Roster
Lv 20 Grotle "Alacar"
Lv 23 Luxio "Elsa"
Lv 19 Staravia "Gypsy"
Lv 18 Machop "Juggernaut"
Lv 9 Onix "Kerreck"
Lv 8 Zubat "Squee!"
Currently, I have just gotten the second gym badge, and am in the process of levelling up my pokemon to around 18-20, which will take some time.
I have more, but I am not using them:
Lv 3 Bidoof "Poo-bah"
Lv 5 Geodude "Bender"
Lv 8 Psyduck "Cecil"
Lv 9 Pachirisu "Omna"
Lv 11 Shellos "Vaarsuvius"
Mostly for kicks.
I'm just waiting to get a MewTwo so I can name him Photon Eater.