Charizard

Charizard is generally regarded as the best Pokemon in NU. It's powerful, fast, and extremely versatile, capable of running sets ranging from special attacker to physical setup sweeper to Toxic staller that each require different counters. Its typing comes with an obvious drawback in a 4x weakness to Stealth Rock, making Rapid Spin support nearly mandatory, but Charizard also has an immunity to Ground and resistance to Fighting, which open up far more opportunities to switch in freely than other offensive Fire-types have, as well as access to Roost. When you're building an NU team, Charizard is the number one Pokemon you need to keep in mind.