Welcome to the Ruins of Alph version of the SM UU Viability Ranks!
Here, our goal is to sort every Pokemon with viability in UU into rankings that can distinguish them all based upon their specific value in the tier. The community and the Viability Ranking's council will work together to refine the rankings from time to time to make sure they are as accurate as possible. Being an oldgen, updates will happen infrequently, but we will work to keep ranks up to date for any developments that occur.
The S tier contains a select few metagame-defining Pokemon, the best of the best, and the A tiers reflect on the Pokemon which are extremely effective but flawed in some aspects. The B tier is slightly more expansive, with the B+ tier representing Pokemon that are fairly common and threatening but don't quite make the cut for A-, while the B- tier represents Pokemon which fill minor, but relevant, niches. Below the B tier, the generic C tier displays the rest of the Pokemon that are usable in UU, but don't have a niche that is appreciated by most UU teams.
All Pokemon are also ordered within each subrank, so the top Pokemon in A+ is considered "better" than the Pokemon below it. As we go into lower subranks, the differences become more and more negligible, so feel free to comment your opinion below on any of the rankings. Without further adieu, let's get to the rank!
S Rank
Scizor
A+ Rank
Latias
Aerodactyl-Mega
Empoleon
Hydreigon
Amoonguss
Cobalion
Primarina
A Rank
Hippowdon
Manectric-Mega
Blissey
Sharpedo-Mega
Terrakion
Krookodile
Rotom-H
Infernape
Aggron-Mega
Togekiss
Altaria-Mega
A- Rank
Steelix-Mega
Mimikyu
Mew
Mamoswine
Rhyperior
Nidoqueen
Bisharp
Tentacruel
B+ Rank
Klefki
Slowbro-Mega
Swampert
Starmie
Froslass
Volcanion
Doublade
Gligar
Nidoking
Slowbro
B Rank
Chesnaught
Celebi
Alomomola
Seismitoad
Suicune
Zeraora
Jellicent
Gengar
Roserade
Moltres
Magneton
Houndoom-Mega
Absol-Mega
Blastoise-Mega
B- Rank
Crawdaunt
Mienshao
Pidgeot-Mega
Reuniclus
Necrozma
Bewear
Feraligatr
Kyurem
Lucario
Nihilego
Milotic
C+ Rank
Florges
Beedrill-Mega
Rotom-C
Sylveon
Azelf
Aurorus
Diancie
Chandelure
Muk-Alola
C Rank
Bronzong
Araquanid
Salazzle
Venomoth
Crobat
Sceptile-Mega
Pyukumuku
Heracross
Talonflame
C- Rank
Tsareena
Toxicroak
Tornadus
Snorlax
Articuno
Mantine
Haxorus