Sure, talking about favorite Pokemon is always nice.
Fire: Braixen (I love Fennekin and Delphox a lot too, but I adore Braixen's design.) Water: Lapras (There's a lot of cool Water types, but I love Lapras's "personality" as well as design.) Grass: Serperior (Its design is just plain gorgeous.) Electric: Luxray (See above.) Psychic: Espeon (By such a narrow margin, there's so many great Psychic types.) Ice: Froslass (Ice/Ghost yuki-onna with a beautiful design. And such a big improvement over Glalie.) Dragon: Lati@s (Cool designs, and I liked their movie. Plus they're part Psychic.) Dark: Umbreon (Beautiful design, and I love using it. I almost always evolve Eevee into Umbreon now, even over Espeon.) Normal: Eevee (It's adorable in its own right, but I just love the possibilities Eevee brings.) Fighting: Lucario (Call me unoriginal, but it's just cool, and I like it in SSBB.) Flying: Lugia (One of the coolest legendaries ever, really nice design, and the cover mascot of arguably my favorite video game.) Poison: I don't know. I like Poison types but I don't really have a stand out favorite. Ground: Nidoqueen (Whereas Nidoking just feels like the generic "big scary monster", I like how Nidoqueen always felt like a strong mother figure.) Rock: Corsola (It's just so freaking adorable!) Bug: Vespiquen (Really overlooked Pokemon. Very unique, good defensive Pokemon and it's design is both beautiful and terrifying.) Ghost: Misdreavus/Mismagius (I love her concept, I love her design, I love her type, I love her moveset. And Misdreavus is the cutest of all!) Steel: Mega Mawile (How can something be this adorable and this badass at the same time?) Fairy: Mega Mawile (See above.)