Vappy is outclassed to hell and back. It has a niche during the BP era, but then it got nerfed...
Anyway, aside from this Starmie crap, i'm going to nominate Kyurem-B for A.
Depending on its set, Cube can beat all the S-rank Pokemon (even +1 Zard X if it runs Scarf Jolly), thanks to its enormous firepower even by Ubers standards. The Fairy-type did not affect him that much, since it can beat all Fairy-type Pokemon in the game with either Fusion Bolt, (CB) Iron Head or Earth Power. The Aegislash ban is also a blessing for it, since it could live an Earth Power (or two from physically offensive variants) and OHKO back.
Also, Mixed Kyurem-B takes a massive dump on stall. Even more so than Mega Hera/Gardy, which are being proposed for A-/A. Mold Breaker is one of the main reasons, since it bypasses Venusaur's Thick Fat and Skarmory's Sturdy, allowing Cube to OHKO them. Clefable and Quagsire are 2HKOed by Ice Beam, Amoonguss is OHKOed, Chansey gets beaten in two hits by Outrage (or Dragon Claw), Heatran gets smashed by Earth Power, Ferrothorn is 2HKOed by Ice Beam, etc etc etc.
I think K-B is better than pokes like Skarmory and Manaphy, and more comparable to the likes of Terrakion and Lando-T.
Anyway, aside from this Starmie crap, i'm going to nominate Kyurem-B for A.
Depending on its set, Cube can beat all the S-rank Pokemon (even +1 Zard X if it runs Scarf Jolly), thanks to its enormous firepower even by Ubers standards. The Fairy-type did not affect him that much, since it can beat all Fairy-type Pokemon in the game with either Fusion Bolt, (CB) Iron Head or Earth Power. The Aegislash ban is also a blessing for it, since it could live an Earth Power (or two from physically offensive variants) and OHKO back.
Also, Mixed Kyurem-B takes a massive dump on stall. Even more so than Mega Hera/Gardy, which are being proposed for A-/A. Mold Breaker is one of the main reasons, since it bypasses Venusaur's Thick Fat and Skarmory's Sturdy, allowing Cube to OHKO them. Clefable and Quagsire are 2HKOed by Ice Beam, Amoonguss is OHKOed, Chansey gets beaten in two hits by Outrage (or Dragon Claw), Heatran gets smashed by Earth Power, Ferrothorn is 2HKOed by Ice Beam, etc etc etc.
I think K-B is better than pokes like Skarmory and Manaphy, and more comparable to the likes of Terrakion and Lando-T.