I've drawn a lot of pokemon crossbreeds recently. I got the idea when I thought how cool it would be to have a pokemon game where you could actually create new kinds of pokemon through breeding. Then I thought the most fun way to get your starter pokemon in a game like that would be this: first you'd get to choose from water, fire and grass. Then you would choose which pokemon starters of that type you would like to breed with each other. For example, if you chose grass, you'd get to choose from Bulbasaur x Chikorita, Chikorita x Treecko or Treecko x Bulbasaur. I didn't include the 4th generation pokemon, because there would've been too many options and besides, I don't really like the 4th generation starters. : P
These are the fire- type starters you could get that way, and their first evolved forms, too. (I know that charmander can't really breed with Torchic or Cyndaquil, but I just wanted to make all starters this way) I'm still working on the last forms, but I have a pretty good picture of them in my mind. I was too lazy to ink their lines since there's so many of these, but maybe I'll do cleaner versions of these some day.
EDIT: Added the final evolutions ans changed the order. This way it seemed more logical. ^^
Cyndachic, Quilbusken, Typhloziken
Charchic, Charbusken, Chariziken
Charquil, Charmelava, Charphlosion