The first Pokemon I caught was Patrat because he was the first Pokemon that appeared in the tall grass when I was walking.
Oh man, I HATED training blitzle, but when he evolved I, like, fell in love with the big guy.Pidove, then Blitzle. :) Im training blitzle very hard right now.
So what kind of pokemon did you catch first on your journey in Unova?
For me, I had already decided on catching a Purrloin, and I just caught it.