Omg, I kinda liked all the Eevee evolutions walking behind you, they just looked so adorably imo! :3 I also loved it how they put the shiny details into it too, if a Pokemon was shiny! ;)
Sometimes it was just TOO FUN to kinda troll your game, taking some overly too large or hillarious looking Pokemon out just to see what it would look like when they are walking with you outside xD ROFL... points at Wailord :3
But, here the ones I liked the most:
- Cyndaquil (<3)
- Pikachu
- Pidgeot (just so adorable having a flying bird behind you!)
- Eevee evolutions
- Charizard (amazing having a Dragon with you rofl)
- Dratini (cute!)
- Dragonair (looked really pretty)
- Dragonite (cute as well!)
- Arcanine (amazingly done! I always liked Arcanine, so amazing to have him walking behind you)
- Nidoking/Nidoqueen
- Rhydon
- Steelix ROFL, HILLARIOUS xD!!! Remember some Pokemon were TOO LARGE to fit through the door in the Pokemon Center for example, so you had to retreat them inside their Pokeballs in order to walk in the Pokemon Center or other buildings, but they still looked awesome! :3
- Same above for Gyarados xD (I still love you rofl)
The ones I didn't like that much (sometimes you catch a Pokemon and it looks awesome, while the "walking-sprite" doesn't unfortunately...):
- Kingdra
- Houndoom
- Feraligatr
- Typhlosion
- Abra/Kadabra/Alakazam
- Tyranitar
So, I was sold when Pokemon HeartGold and SoulSilver came out because it was so adorable and amazing to have the "Pokemon-walking-with-you" concept back after Yellow (it was only Pikachu but still so cute in 8-bit rofl) :)
I still hope someday it will be possible again (or you can choose wether you want to walk with your Pokemon outside of your Pokeball or not)!
Would love to have a walking Fennekin/Braixen/Delphox behind me! :3