PLEASE READ: I’m not asking for your favorite Pokémon game, but your favorite Pokémon creature. For me that would’ve been Empoleon. He was my first Pokémon who I got all the way up to lvl 100. No grinding, no mass injective Rare Candies into his veins. Just old fashioned gaming.

Outside of the Pokémon games, I always resonated with Pichu. He was one of my go-to’s playing Melee growing up.

Jigglypuff or Pummeluff here in germany!

Take a guess.

Charmander, cos salamanders were one of my favourite animals as a kid. I even stopped mine evolving into Charizard so he'd stay a Charmander forever, back when I played my only mainline Pokemon game. (Pokemon Red, badly emulated on our home PC, back in 2000)

Psyduck and Bulbasaur. They're just adorable.

Psyduck all day, every day.

I love his cute, vacant expression and constant bellyaching.

I remember having a Psyduck keychain in high school. I absolutely adored that thing :)

KOFFEE!!!!!!

(I didn't actually play a Pokemon game until Pokemon Go, I think? But had, for a long while, found this guy amusing. PS, I know that's not its name... it's an improvement.)

Aerodactyl was my favorite since the first games. Never saw a reason to change that.

Well there wasn't Pokemon when I was "growing up" (at least physically), but here's some of my favorites:
Scyther: I don't remember if I've ever had one, but it was a favorite, the coolest
Sandslash: in my first play (Blue) it was a HM Pokemon I kept till championship
Haunter: I eventually played Blue, Red, Yellow and Green on emulator and I may have every time had Haunter in champion team (since I couldn't get Gengar), so it's big nostalgia
Bulbasaur: my very first Pokemon
Muk, Beedrill, Bellsprout: from my favorite episode ever (77/79 "The Fourth Round Rumble", one of the last of original series - also one reason for Scyther and Bulbasaur)

Alakazam, Scyther and Gengar were my goats

Lowkey Tentacruel as well