Original Release Date: August 14th 2000
Amount of Cards: 132
Theme Decks:
   Brock
   Misty
   Lt. Surge
   Erika

The Gym Heroes set was the fourth first generation expansion. Following on with the new Pokémon concepts, this set introduced Owner Pokémon. These Pokémon are owned by various trainers, in this case the Kanto Gym Leaders. Gym Heroes focuses on Brock, Misty, Lt. Surge & Erika, but also contains some cards owned by Sabrina, Blaine & Rocket. It was an unusual set in that it had many Pokémon with rarities of Rare for Pokémon cards that people would generally feel should be Common. This is due to them originally being only in special theme decks in Japan.
It is also the first set since Base to include Basic Energy Cards. It also introduced Stadium Cards which get placed into play and give new effects to the gameplay.

Set Number	Picture	Card Name	Card Details
Gym Heroes 1 / 132		Blaine's Moltres	90HP Weakness Resistance Retreat Cost   -30
Gym Heroes 2 / 132		Brock's Rhydon	80HP Weakness Resistance Retreat Cost -30
Gym Heroes 3 / 132		Erika's Clefable	70HP Weakness Resistance Retreat Cost -30
Gym Heroes 4 / 132		Erika's Dragonair	80HP Weakness Resistance Retreat Cost   -30
Gym Heroes 5 / 132		Erika's Vileplume	80HP Weakness Resistance Retreat Cost
Gym Heroes 6 / 132		Lt. Surge's Electabuzz	70HP Weakness Resistance Retreat Cost
Gym Heroes 7 / 132		Lt. Surge's Fearow	70HP Weakness Resistance Retreat Cost -30
Gym Heroes 8 / 132		Lt. Surge's Magneton	70HP Weakness Resistance Retreat Cost
Gym Heroes 9 / 132		Misty's Seadra	70HP Weakness Resistance Retreat Cost
Gym Heroes 10 / 132		Misty's Tentacruel	70HP Weakness Resistance Retreat Cost
Gym Heroes 11 / 132		Rocket's Hitmonchan	60HP Weakness Resistance Retreat Cost
Gym Heroes 12 / 132		Rocket's Moltres	60HP Weakness Resistance Retreat Cost   -30
Gym Heroes 13 / 132		Rocket's Scyther	60HP Weakness Resistance Retreat Cost -30
Gym Heroes 14 / 132		Sabrina's Gengar	80HP Weakness Resistance Retreat Cost   -30
Gym Heroes 15 / 132		Brock	Trainer
Gym Heroes 16 / 132		Erika	Trainer
Gym Heroes 17 / 132		Lt. Surge	Trainer
Gym Heroes 18 / 132		Misty	Trainer
Gym Heroes 19 / 132		The Rocket's Trap	Trainer
Gym Heroes 20 / 132		Brock's Golem	90HP Weakness Resistance Retreat Cost
Gym Heroes 21 / 132		Brock's Onix	70HP Weakness Resistance Retreat Cost
Gym Heroes 22 / 132		Brock's Rhyhorn	60HP Weakness Resistance Retreat Cost -30
Gym Heroes 23 / 132		Brock's Sandslash	60HP Weakness Resistance Retreat Cost -30
Gym Heroes 24 / 132		Brock's Zubat	30HP Weakness Resistance Retreat Cost -30
Gym Heroes 25 / 132		Erika's Clefairy	50HP Weakness Resistance Retreat Cost -30
Gym Heroes 26 / 132		Erika's Victreebel	80HP Weakness Resistance Retreat Cost
Gym Heroes 27 / 132		Lt. Surge's Electabuzz	60HP Weakness Resistance Retreat Cost
Gym Heroes 28 / 132		Lt. Surge's Raichu	70HP Weakness Resistance Retreat Cost
Gym Heroes 29 / 132		Misty's Cloyster	70HP Weakness Resistance Retreat Cost
Gym Heroes 30 / 132		Misty's Goldeen	30HP Weakness Resistance Retreat Cost
Gym Heroes 31 / 132		Misty's Poliwrath	90HP Weakness Resistance Retreat Cost
Gym Heroes 32 / 132		Misty's Tentacool	40HP Weakness Resistance Retreat Cost
Gym Heroes 33 / 132		Rocket's Snorlax	90HP Weakness Resistance Retreat Cost -30
Gym Heroes 34 / 132		Sabrina's Venomoth	60HP Weakness Resistance Retreat Cost -30
Gym Heroes 35 / 132		Blaine's Growlithe	50HP Weakness Resistance Retreat Cost
Gym Heroes 36 / 132		Blaine's Kangaskhan	80HP Weakness Resistance Retreat Cost -30
Gym Heroes 37 / 132		Blaine's Magmar	60HP Weakness Resistance Retreat Cost
Gym Heroes 38 / 132		Brock's Geodude	50HP Weakness Resistance Retreat Cost
Gym Heroes 39 / 132		Brock's Golbat	70HP Weakness Resistance Retreat Cost -30
Gym Heroes 40 / 132		Brock's Graveler	70HP Weakness Resistance Retreat Cost
Gym Heroes 41 / 132		Brock's Lickitung	80HP Weakness Resistance Retreat Cost -30
Gym Heroes 42 / 132		Erika's Dratini	40HP Weakness Resistance Retreat Cost   -30
Gym Heroes 43 / 132		Erika's Exeggcute	50HP Weakness Resistance Retreat Cost
Gym Heroes 44 / 132		Erika's Exeggutor	70HP Weakness Resistance Retreat Cost
Gym Heroes 45 / 132		Erika's Gloom	60HP Weakness Resistance Retreat Cost
Gym Heroes 46 / 132		Erika's Gloom	70HP Weakness Resistance Retreat Cost
Gym Heroes 47 / 132		Erika's Oddish	40HP Weakness Resistance Retreat Cost
Gym Heroes 48 / 132		Erika's Weepinbell	60HP Weakness Resistance Retreat Cost
Gym Heroes 49 / 132		Erika's Weepinbell	70HP Weakness Resistance Retreat Cost
Gym Heroes 50 / 132		Lt. Surge's Magnemite	30HP Weakness Resistance Retreat Cost
Gym Heroes 51 / 132		Lt. Surge's Raticate	70HP Weakness Resistance Retreat Cost -30
Gym Heroes 52 / 132		Lt. Surge's Spearow	30HP Weakness Resistance Retreat Cost -30
Gym Heroes 53 / 132		Misty's Poliwhirl	70HP Weakness Resistance Retreat Cost
Gym Heroes 54 / 132		Misty's Psyduck	50HP Weakness Resistance Retreat Cost
Gym Heroes 55 / 132		Misty's Seaking	70HP Weakness Resistance Retreat Cost
Gym Heroes 56 / 132		Misty's Starmie	80HP Weakness Resistance Retreat Cost
Gym Heroes 57 / 132		Misty's Tentacool	50HP Weakness Resistance Retreat Cost
Gym Heroes 58 / 132		Sabrina's Haunter	50HP Weakness Resistance Retreat Cost   -30
Gym Heroes 59 / 132		Sabrina's Jynx	60HP Weakness Resistance Retreat Cost
Gym Heroes 60 / 132		Sabrina's Slowbro	70HP Weakness Resistance Retreat Cost
Gym Heroes 61 / 132		Blaine's Charmander	50HP Weakness Resistance Retreat Cost
Gym Heroes 62 / 132		Blaine's Growlithe	50HP Weakness Resistance Retreat Cost
Gym Heroes 63 / 132		Blaine's Ponyta	40HP Weakness Resistance Retreat Cost
Gym Heroes 64 / 132		Blaine's Tauros	70HP Weakness Resistance Retreat Cost -30
Gym Heroes 65 / 132		Blaine's Vulpix	40HP Weakness Resistance Retreat Cost
Gym Heroes 66 / 132		Brock's Geodude	40HP Weakness Resistance Retreat Cost
Gym Heroes 67 / 132		Brock's Mankey	40HP Weakness Resistance Retreat Cost
Gym Heroes 68 / 132		Brock's Mankey	40HP Weakness Resistance Retreat Cost
Gym Heroes 69 / 132		Brock's Onix	100HP Weakness Resistance Retreat Cost
Gym Heroes 70 / 132		Brock's Rhyhorn	70HP Weakness Resistance Retreat Cost -30
Gym Heroes 71 / 132		Brock's Sandshrew	40HP Weakness Resistance Retreat Cost -30
Gym Heroes 72 / 132		Brock's Sandshrew	50HP Weakness Resistance Retreat Cost -30
Gym Heroes 73 / 132		Brock's Vulpix	40HP Weakness Resistance Retreat Cost
Gym Heroes 74 / 132		Brock's Zubat	40HP Weakness Resistance Retreat Cost -30
Gym Heroes 75 / 132		Erika's Bellsprout	40HP Weakness Resistance Retreat Cost
Gym Heroes 76 / 132		Erika's Bellsprout	50HP Weakness Resistance Retreat Cost
Gym Heroes 77 / 132		Erika's Exeggcute	40HP Weakness Resistance Retreat Cost
Gym Heroes 78 / 132		Erika's Oddish	50HP Weakness Resistance Retreat Cost
Gym Heroes 79 / 132		Erika's Tangela	60HP Weakness Resistance Retreat Cost
Gym Heroes 80 / 132		Lt. Surge's Magnemite	40HP Weakness Resistance Retreat Cost
Gym Heroes 81 / 132		Lt. Surge's Pikachu	50HP Weakness Resistance Retreat Cost
Gym Heroes 82 / 132		Lt. Surge's Rattata	40HP Weakness Resistance Retreat Cost -30
Gym Heroes 83 / 132		Lt. Surge's Spearow	50HP Weakness Resistance Retreat Cost -30
Gym Heroes 84 / 132		Lt. Surge's Voltorb	40HP Weakness Resistance Retreat Cost
Gym Heroes 85 / 132		Misty's Goldeen	40HP Weakness Resistance Retreat Cost
Gym Heroes 86 / 132		Misty's Horsea	40HP Weakness Resistance Retreat Cost
Gym Heroes 87 / 132		Misty's Poliwag	50HP Weakness Resistance Retreat Cost
Gym Heroes 88 / 132		Misty's Seel	60HP Weakness Resistance Retreat Cost
Gym Heroes 89 / 132		Misty's Shellder	40HP Weakness Resistance Retreat Cost
Gym Heroes 90 / 132		Misty's Staryu	50HP Weakness Resistance Retreat Cost
Gym Heroes 91 / 132		Sabrina's Abra	40HP Weakness Resistance Retreat Cost
Gym Heroes 92 / 132		Sabrina's Drowzee	50HP Weakness Resistance Retreat Cost
Gym Heroes 93 / 132		Sabrina's Gastly	50HP Weakness Resistance Retreat Cost   -30
Gym Heroes 94 / 132		Sabrina's Mr. Mime	50HP Weakness Resistance Retreat Cost
Gym Heroes 95 / 132		Sabrina's Slowpoke	50HP Weakness Resistance Retreat Cost
Gym Heroes 96 / 132		Sabrina's Venonat	40HP Weakness Resistance Retreat Cost
Gym Heroes 97 / 132		Blaine's Quiz #1	Trainer
Gym Heroes 98 / 132		Brock	Trainer
Gym Heroes 99 / 132		Charity	Trainer
Gym Heroes 100 / 132		Erika	Trainer
Gym Heroes 101 / 132		Lt. Surge	Trainer
Gym Heroes 102 / 132		Misty	Trainer
Gym Heroes 103 / 132		No Removal Gym	Stadium This card stays in play when you play it. Discard this card if another Stadium card comes into play. If another card with the same name is in play, you can't play this card.
Gym Heroes 104 / 132		The Rocket's Training Gym	Stadium This card stays in play when you play it. Discard this card if another Stadium card comes into play. If another card with the same name is in play, you can't play this card.
Gym Heroes 105 / 132		Blaine's Last Resort	Trainer
Gym Heroes 106 / 132		Brock's Training Method	Trainer
Gym Heroes 107 / 132		Celadon City Gym	Stadium This card stays in play when you play it. Discard this card if another Stadium card comes into play. If another card with the same name is in play, you can't play this card.
Gym Heroes 108 / 132		Cerulean City Gym	Stadium This card stays in play when you play it. Discard this card if another Stadium card comes into play. If another card with the same name is in play, you can't play this card.
Gym Heroes 109 / 132		Erika's Maids	Trainer
Gym Heroes 110 / 132		Erika's Perfume	Trainer
Gym Heroes 111 / 132		Good Manners	Trainer
Gym Heroes 112 / 132		Lt. Surge's Treaty	Trainer
Gym Heroes 113 / 132		Minion of Team Rocket	Trainer
Gym Heroes 114 / 132		Misty's Wrath	Trainer
Gym Heroes 115 / 132		Pewter City Gym	Stadium This card stays in play when you play it. Discard this card if another Stadium card comes into play. If another card with the same name is in play, you can't play this card.
Gym Heroes 116 / 132		Recall	Trainer
Gym Heroes 117 / 132		Sabrina's ESP	Trainer
Gym Heroes 118 / 132		Secret Mission	Trainer
Gym Heroes 119 / 132		Tickling Machine	Rocket's Secret Machine
Gym Heroes 120 / 132		Vermillion City Gym	Stadium This card stays in play when you play it. Discard this card if another Stadium card comes into play. If another card with the same name is in play, you can't play this card.
Gym Heroes 121 / 132		Blaine's Gamble	Trainer
Gym Heroes 122 / 132		Energy Flow	Trainer
Gym Heroes 123 / 132		Misty's Duel	Trainer
Gym Heroes 124 / 132		Narrow Gym	Stadium This card stays in play when you play it. Discard this card if another Stadium card comes into play. If another card with the same name is in play, you can't play this card.
Gym Heroes 125 / 132		Sabrina's Gaze	Trainer
Gym Heroes 126 / 132		Trash Exchange	Trainer
Gym Heroes 127 / 132		Fighting	Basic Energy
Gym Heroes 128 / 132		Fire	Basic Energy
Gym Heroes 129 / 132		Grass	Basic Energy
Gym Heroes 130 / 132		Lightning	Basic Energy
Gym Heroes 131 / 132		Psychic	Basic Energy
Gym Heroes 132 / 132		Water	Basic Energy