I'm currently working on Chespin and Fennekin's lines at the moment, but it will be a bit longer before those are finished. I still have two exams that I should be revising for and lots of errands to run. Thought I'd upload the Froakie line since I finished it rather than waiting until they were all done.
As per usual, you can find my other realistic Pokémon sketches and drawings here.
I based these guys on a mix of Poison Arrow frogs and Asian Horned Frogs. I shifted Greninja's anatomy a little so that it could even stand up on its hind legs at all, and tried to retain that angular look that it has.
Anyway back to exam revision (sigh). These were done with Photoshop CS5 and a Wacom Cintiq 24 HD in a couple of hours.