Gen 1 plays by its own rules, and the S-Tier picks prove it. Alakazam at 135 Special hits hard and tanks special moves since those stats aren't split yet. Starmie is almost as fast with Water/Psychic coverage nothing resists well. Tauros at 110 base Speed abuses the crit formula with Normal STAB and Hyper Beam. Snorlax walls everything physical. Every ranking here is Gen 1 only — no modern movepool buffs or type additions.

How to read this tier list
Elite Pokemon
Base Stat Total of 600+i
Legendary
Story-central, catchable in-gamei
Mythical
Rare, event-exclusivei
BST
Base Stat Total (sum of all 6 stats)i
Fast with strong offensei
Bulky with good offensei
Very high offense, slowi
Extremely bulky, low offensei
High offense but fragilei
Bulky support, low offensei
Fast utility, momentum controli
A
Strong Picks 4 Pokemon
High stats and wide coverage make these your go-to team picks for Red and Blue.
C
Situational 71 Pokemon
Workable but outshone. Better Red & Blue options exist for every role these fill.
525
Venusaur
Venusaur#0003
GRASSPOISON
530
Blastoise
Blastoise#0009
WATER
395
Butterfree
Butterfree#0012
BUGFLYING
395
Beedrill
Beedrill#0015
BUGPOISON
479
PIVOT
Pidgeot
Pidgeot#0018
NORMALFLYING
413
Raticate
Raticate#0020
NORMAL
442
PIVOT
Fearow
Fearow#0022
NORMALFLYING
448
Arbok
Arbok#0024
POISON
320
Pikachu
Pikachu#0025
ELEC
485
PIVOT
Raichu
Raichu#0026
ELEC
300
Sandshrew
Sandshrew#0027
GROUND
450
Sandslash
Sandslash#0028
GROUND
505
Nidoqueen
Nidoqueen#0031
POISONGROUND
505
Nidoking
Nidoking#0034
POISONGROUND
483
Clefable
Clefable#0036
FAIRY
505
PIVOT
Ninetales
Ninetales#0038
FIRE
270
Jigglypuff
Jigglypuff#0039
NORMALFAIRY
435
Wigglytuff
Wigglytuff#0040
NORMALFAIRY
455
Golbat
Golbat#0042
POISONFLYING
490
Vileplume
Vileplume#0045
GRASSPOISON
405
Parasect
Parasect#0047
BUGGRASS
450
Venomoth
Venomoth#0049
BUGPOISON
265
Diglett
Diglett#0050
GROUND
425
SWEEP
Dugtrio
Dugtrio#0051
GROUND
500
Golduck
Golduck#0055
WATER
455
Primeape
Primeape#0057
FIGHT
555
Arcanine
Arcanine#0059
FIRE
300
Poliwag
Poliwag#0060
WATER
385
Poliwhirl
Poliwhirl#0061
WATER
510
Poliwrath
Poliwrath#0062
WATERFIGHT
310
Abra
Abra#0063
PSYCHIC
400
SWEEP
Kadabra
Kadabra#0064
PSYCHIC
405
Machoke
Machoke#0067
FIGHT
505
BREAK
Machamp
Machamp#0068
FIGHT
390
Weepinbell
Weepinbell#0070
GRASSPOISON
490
Victreebel
Victreebel#0071
GRASSPOISON
515
PIVOT
Tentacruel
Tentacruel#0073
WATERPOISON
300
Geodude
Geodude#0074
ROCKGROUND
390
Graveler
Graveler#0075
ROCKGROUND
410
Ponyta
Ponyta#0077
FIRE
500
SWEEP
Rapidash
Rapidash#0078
FIRE
465
GLASS
Magneton
Magneton#0082
ELECSTEEL
470
SWEEP
Dodrio
Dodrio#0085
NORMALFLYING
475
Dewgong
Dewgong#0087
WATERICE
500
TANK
Muk
Muk#0089
POISON
310
Gastly
Gastly#0092
GHOSTPOISON
405
GLASS
Haunter
Haunter#0093
GHOSTPOISON
385
Onix
Onix#0095
ROCKGROUND
483
SUPPORT
Hypno
Hypno#0097
PSYCHIC
325
Krabby
Krabby#0098
WATER
425
Marowak
Marowak#0105
GROUND
455
GLASS
Hitmonlee
Hitmonlee#0106
FIGHT
455
Hitmonchan
Hitmonchan#0107
FIGHT
385
Lickitung
Lickitung#0108
NORMAL
340
Koffing
Koffing#0109
POISON
490
Weezing
Weezing#0110
POISON
345
Rhyhorn
Rhyhorn#0111
GROUNDROCK
435
Tangela
Tangela#0114
GRASS
490
Kangaskhan
Kangaskhan#0115
NORMAL
440
Seadra
Seadra#0117
WATER
450
Seaking
Seaking#0119
WATER
460
Mr. Mime
Mr. Mime#0122
PSYCHICFAIRY
500
SWEEP
Scyther
Scyther#0123
BUGFLYING
490
PIVOT
Electabuzz
Electabuzz#0125
ELEC
495
Magmar
Magmar#0126
FIRE
525
TANK
Vaporeon
Vaporeon#0134
WATER
525
BREAK
Flareon
Flareon#0136
FIRE
395
Porygon
Porygon#0137
NORMAL
495
BREAK
Omastar
Omastar#0139
ROCKWATER
495
BREAK
Kabutops
Kabutops#0141
ROCKWATER
515
SWEEP
Aerodactyl
Aerodactyl#0142
ROCKFLYING
  • Alakazam. It has 135 Special in a game where that one stat handles both Sp. Atk and Sp. Def. Faster than almost everything, and Psychic type has no real counters in Gen 1. Bug-type moves max out at 25 base power per hit, and Ghost is bugged to do nothing against Psychic instead of being super effective. Tauros is the other S-Tier staple for its Speed-based crits and Normal-type coverage.

  • Squirtle gives you the smoothest early game. Blastoise handles Brock, Misty is a breeze, and it picks up Ice Beam for coverage later. Your starter honestly matters less than your mid-game picks though. Nidoking from Mt. Moon before the second gym is more impactful than any starter choice. Charmander is the roughest start since it's weak to both Brock and Misty.

  • Gen 1 doesn't split Special into Sp. Atk and Sp. Def. One stat does both jobs. Pokemon with high Special hit hard AND tank special moves at the same time. That's why Alakazam at 135 Special is the best special attacker while also being a solid special wall. Chansey at 105 Special becomes one of the best walls in the game despite zero offensive presence.

  • Speed determines your crit rate in Gen 1. Faster Pokemon crit more often, and high-crit moves like Slash stack on top of that. Tauros with Slash crits almost every hit because of its 110 base Speed. Crits in Gen 1 also ignore all stat changes, letting you punch through defensive setups. That mechanic alone pushes fast Pokemon up this tier list.

  • Zapdos is the best of the three Birds and one of the strongest Pokemon in the game. 125 Special with Electric/Flying typing gives it wide coverage. Articuno and Moltres are solid but their typing is less useful defensively. Mewtwo is post-game only, locked behind Cerulean Cave after the Champion. All four rank S-Tier or A-Tier on this list.

  • Red gets Arcanine and Electabuzz. Blue gets Sandslash and Magmar. Arcanine is the standout with 110 Attack and 95 Speed, making it one of the best Fire-types available. Electabuzz is decent but Zapdos fills the Electric slot better. Most other exclusives are interchangeable between versions.

  • Anything that evolves late with a slow leveling curve. Dratini needs to hit level 55 for Dragonite, which means deep grinding. Onix looks good early but its stats are terrible long-term. Porygon from the Celadon Game Corner costs too many coins for what it does. And most Bug-types are dead weight since their moves are awful in Gen 1.