Probably would have to be Kangaskhan, maybe Lapras.
Least Favorite Pokémon:
Without a doubt, it would have to be Cofagrigus, it really does look kind of uncreative/bad looking design.
Favorite Pokémon Type:
Hands down, water. They all look cool, and weakness that don't usually appear in every battle (electric/grass, not too popular in most teams besides maybe one or two out of 6). Though second would have to be Psychic.
Least Favorite Pokémon Type:
Probably would be rock as I never use it in my teams, ever.