Goodness, you still remember that! You're really something!
I'd say Chimchar, Pansage and Pansear are 3 Pokemon I like purely because of their design, not because of their stats, moves, typings or abilities. Chimchar is the only 1 of the 3 that I've ever used and that too was in-game. I've never dared to use a Pokemon in a competitive battle without judging its competitive performance first.
So, I guess the answer to your question is Chimchar. I found it quite cute :). Otherwise I would've chosen Piplup, as Water types provide better coverage at the start of the game with Normal + Water moves.