Machamp Feraligatr Salamence Infernape Samurott? Don't really have a favorite from gen 5 honestly. Talonflame. I used it as an HM slave for fly the entire game thinking meh I have Charizard this thing is worthless, but post game after training it to level 100 (trained my whole team to level 100) and finding out how amazing it was competitively, It's become one of my favorites.
Favorite mega: Mawile, always thought it was a cute Pokemon but never used it since it was underwhelming in battle. Love that they gave it a second chance with a mega evolution, and I use it second to only Kangaskhan in battle (cause I guess I'm a just a scrub like that :P)
3DS Friend Code: 1650-1946-7733 - IGN Ryan Normal Safari (Eevee) - SV: 335