you don't want to be a cat, coon, lion and fox..
That only leaves you to Bunny, Buffalo, Sheep and Dragon.
I recommend you to create Bunny or a sheep.
Pure AP 4123/4114 (depend on your gears)
- Easy Train and not hard to lvl
- Powerful on 1 on 1
- KO most of the monsters in the game
For sheep, i am not sure what elements you would like. But i think if you get bored of your dark mage, getting dark hybrid may not be a good idea...
The build depend on what elements you choose..