Necro because of boredom.
Gen 1. Venasuar and Blastoise tie for me. I love the poison/grass typing and i LOVE turtles. Plus both have pretty awesome megas.
Gen 2. Feraligatr - hands down the best looking design IMO and is an absolute powerhouse with sheer force.
Gen 3. Sceptile - Just love its design but Swampert(absolute unit mega) comes in as a close second.
Gen 4. Empoleon - Probably the hardest gen to choose a favorite in because i adore all 3, But TEN resistances plus he looks amazing. Love the trident facemask.
Gen 5. Serperior - while i love a reckless emboar, Contrary serperior with leaf storm wreaks havok. And it has such a regal design.
Gen 6. Greninja - Very close between greninja and chestnaught( i love tanky mons) but a ninja frog that uses its tongue as a scarf? yes please. Not to mention protean is a stupid good ability.
Gen 7. Inceniroar - My first fire starter favorite lol. For starters he looks amazing. Tiger wrestler heel with a flaming belt pleases me greatly. And the dark typing is just the cherry on top.