Chaos Tier List

Ubers
-Pokémon that are too powerful in a competitive setting, and are thus banned under most conditions.

Arceus
Darkrai
Deoxys (All forms)
Dialga
Giratina
Groudon
Ho-oh
Kyogre
Latias
Latios
Lugia
Mew
Mewtwo
Palkia
Rayquaza
Wobbuffet

Overused
-Pokémon best suited to the competitive level

Aerodactyl
Alakazam
Azelf
Blissey
Bronzong
Celebi
Cresselia
Dragonite
Dugtrio
Dusknoir
Electivire
Gallade
Garchomp
Gengar
Gliscor
Gyarados
Heatran
Heracross
Infernape
Jirachi
Jolteon
Lucario
Manaphy
Metagross
Porygon-Z
Raikou
Regice
Rhyperior
Salamence
Shaymin
Skarmory
Slaking
Snorlax
Starmie
Suicune
Swampert
Tauros
Togekiss
Tyranitar
Uxie
Weavile
Yanmega
Zapdos

Borderline
-Too powerful for the Underused class, yet common counters make them unsuitable for the Overused Class

Ambipom
Arcanine
Armaldo
Articuno
Blaziken
Breloom
Claydol
Cradily
Crobat
Dodrio
Donphan
Drapion
Empoleon
Entei
Espeon
Exeggutor
Feraligatr
Floatzel
Flygon
Forretress
Gardevoir
Hippowdon
Honchkrow
Houndoom
Jumpluff
Kingdra
Lapras
Leafeon
Lickilicky
Lopunny
Ludicolo
Machamp
Magmortar
Magnezone
Mamoswine
Marowak
Medicham
Mesprit
Milotic
Miltank
Mismagius
Moltres
Muk
Ninetales
Ninjask
Omastar
Porygon2
Probopass
Rampardos
Regigigas
Regirock
Registeel
Roserade
Sceptile
Scizor
Slowbro
Smeargle
Spiritomb
Staraptor
Steelix
Swellow
Tangrowth
Tentacruel
Torterra
Toxicroak
Typhlosion
Umbreon
Vaporeon
Weezing

Underused
-Pokémon that will not perform very well at all in standard Competitive Play

Abomasnow
Absol
Aggron
Altaria
Ampharos
Arbok
Ariados
Azumarill
Banette
Bastiodon
Bellossom
Blastoise
Cacturne
Camerupt
Carnivine
Charizard
Clefable
Cloyster
Corsola
Crawdaunt
Dewgong
Drifblim
Dunsparce
Electrode
Exploud
Fearow
Flareon
Froslass
Gastrodon
Girafarig
Glaceon
Glalie
Golduck
Golem
Gorebyss
Granbull
Grumpig
Hariyama
Hitmonchan
Hitmonlee
Hitmontop
Huntail
Hypno
Kabutops
Kangaskhan
Kecleon
Kingler
Lanturn
Linoone
Lunatone
Luxray
Magcargo
Manectric
Magcargo
Mantine
Masquerain
Meganium
Mightyena
Mr. Mime
Nidoking
Nidoqueen
Noctowl
Octillery
Phione
Pikachu
Pinsir
Poliwrath
Politoed
Primeape
Purugly
Quagsire
Qwilfish
Raichu
Rapidash
Raticate
Relicanth
Sableye
Sandslash
Scyther
Seaking
Seviper
Sharpedo
Shiftry
Shuckle
Skuntank
Slowking
Solrock
Stantler
Sudowoodo
Swalot
Torkoal
Tropius
Ursaring
Venomoth
Venusaur
Vespiquen
Victreebel
Vileplume
Wailord
Walrein
Whiscash
Xatu
Zangoose

Never Used
-Pokémon that basically have no competitive chance.

Beautifly
Beedrill
Bibarel
Butterfree
Castform
Chatot
Cherrim
Chimecho
Delcatty
Delibird
Ditto
Dustox
Farfetch'd
Furret
Illumise
Kricketune
Ledian
Lumineon
Luvdisc
Mawile
Minun
Mothim
Pachirisu
Parasect
Persian
Pidgeot
Plusle
Rotom
Shedinja
Spinda
Sunflora
Unown
Volbeat
Wigglytuff
Wormadam


In some cases there are pokemon in these Tiers who shouldnt be (Rotom for instance is a great pokemon to have on a team it has good speed and sp att, and also Aggron, which nearly meets Rhyperior in stats and has a similar move pool, except its double weaknesses make it inferior to it.)

Some great battlers out there sometimes get the edge over their opponent by including unpopular Pokémon (like Azumarill, Torkoal, and Empoleon) into their team. By playing with these Pokémon well, you can catch your opponent off guard and take the win!