You're asking me what my favorite Pokémon are?
1. Wooper and Quagsire: I like them both a lot, but the crown goes to Wooper. Unfortunetly when I was doing a third Diamond and Pearl run, I was exploring the Great Marsh and found a shiny Wooper! I freaked out! I just love the colour design of it. So obviously I started throwing the horrible safari balls at it, but it soon ran away. I screamed out loud: "FUUUUUUUU". 2. Tied with Bayleef and Vivillion: I mostly like Bayleef because it resembles my real name and because I chose Chikorita in my Heart Gold run.
Vivillion because after figuring out the Vivillion sweep strat in Pokemon X & Y, I fell in love with Vivillion. I have soon yet to transfer him into ORAS.
3. Cacturne: This one is probably the weirdest on the list. I don't even know why I love Cacturne. Theres something about the design that I just really like. + It's supposed to be a scarecrow, but it's weak to crows. lol
Those are my favorite Pokémon I love lots of Pokémon but this list would go on for ages.