In the anime, Brock's parents, Flint and Lola, have also held the position of Pewter Gym Leader, with the eldest of Brock's younger siblings, Forrest, being the current Leader.
Pewter City Pokémon Gym Leader: Brock
The Rock Solid Pokémon Trainer!
Pewter City Pokémon Gym Leader: Brock
The Rock Solid Pokémon Trainer
Pewter City Pokémon Gym Leader: Brock
The Rock-Solid Pokémon Trainer
Pewter City Pokémon Gym Leader: Brock
The Rock-Solid Pokémon Trainer
Pewter Gym appears in all games set in the Kantoregion, appearing much the same in each: a small building with a Japanese rock garden inside, oneRBYGSCFRLG or twoHGSSPE Trainers, and the Gym Leader, Brock, waiting at the back of the Gym, stading on plain floorRBYGSC or a large stone pedestalFRLGHGSSPE. In the Generation I games and their remakes, if the player tries to leave Pewter City to Route 3 before earning the Boulder Badge, a boy standing at the route entrance will lead them to the front of the Gym.
In Pokémon: Let's Go, Pikachu! and Let's Go, Eevee!, the player must show a Grass- or Water-type Pokémon from their party to the Gym guide in order to be allowed to challenge the Gym. The Pokémon shown can then be removed from the party without incident, and the player can challenge Brock and his Trainers without any Grass- or Water-type Pokémon if they so desire.
Trainers with a telephone symbol by their names will give their Pokégear number to the player, and may call or be called for a rematch with higher-level Pokémon.
Trainers with a telephone symbol by their names will give their Pokégear number to the player, and may call or be called for a rematch with higher-level Pokémon.
The Pewter Gym is a stone building apparently set apart from the rest of Pewter City. When it first appeared, the Gym's name was visible at the front, but it's removed in its later appearances. In the Gym's debut appearance, Brock was shown waiting inside in the dark for challengers, sitting on a stone pedestal as he does in the games. The battlefield, which consists of two halves that can be moved together during battles, is littered with jagged rocks and boulders, and a balcony along the edge above provides spectators a spot to watch Gym battles. Despite being a Rock-type Gym, the building has sprinklers for fire safety. During Pokémon the Series: Diamond and Pearl, the Gym was shown to have become notably cleaner than previously. In addition, the battlefield now has more pointed rocks, while the area around it is a blue shiny floor, possibly to reflect Lola's penchant for water. Brock's family lives in a large house located at the back of the Gym. The Gym also has a large storage room for Poké Balls, as seen during Pokémon the Series: Ruby and Sapphire.
The Pewter Gym has made multiple appearances in the anime, first being seen in Showdown in Pewter City, where Ash challenged it as his first Gym in order to earn his first Badge. However, his Pikachu was at a severe disadvantage against Brock's Onix, forcing Ash to eventually surrender, suffering his first loss since he started his journey. After some training with Pikachu, Ash challenged Brock to a rematch, during which Pikachu accidentally set off the Gym's sprinkler system, allowing Pikachu's Electric moves to hurt Onix. However, Ash refused to deal the finishing blow and forfeited, saying that he didn't feel this way of winning would be fair. However, soon after, Brock caught up to Ash and gave him a Boulder Badge, insisting that he had earned it through his kindness to Pokémon. The two were then approached by Flint, Brock's father and the previous Pewter Gym Leader. As Brock's true dream was to become a Pokémon Breeder and him having held the Gym Leader position only out of obligation to his family, he gave his Gym Leader position back to Flint in order to travel with Ash.
During Brock's travels with Ash, Brock's mother, Lola, returned to the Gym and decided to redecorate and redesign it to match her preference of Water-type Pokémon, including adding a pool of water in the middle of the battlefield. When Brock returned to the Gym in A Family That Battles Together Stays Together!, he was shocked to see the changes done to it and joined his younger brother Forrest in voicing his distaste towards them. Flint battled Lola to change the Gym back, but was defeated. He then suggested that the Gym could be converted into a dual-type one, but Brock rejected the idea and challenged his mother to a battle as well. Unlike Flint, Brock was able to defeat Lola, restoring the Gym to its roots as a sole Rock-type Gym. Brock then left his Onix, Geodude, and Crobat with Forrest at the Gym before heading to Hoenn to rejoin Ash.
The Gym was subject to a second remodeling attempt, this time by a disguised Team Rocket, in Grating Spaces. Ash and Brock had a Tag Battle against Jessie and James while Meowth tried to steal Poké Balls from the Gym's storage room, until he was exposed by Max. Afterwards, the stolen Poké Balls were recovered and Team Rocket was sent blasting off again.
The Gym was featured again in DPS02, where Brock returned there to meet a Nurse Joy from the Pokémon Inspection Agency, who had come to shut the Gym down due to it not having an official Leader present. Brock battled against Nurse Joy, but was defeated, endangering the Gym's fate. Afterwards, Brock learned that while he had previously left his Gym Leader duties to Forrest, Flint had accidentally lost the Gym Leader change notice he had been supposed to bring to the PIA, causing the information to never reach the agency. Brock managed to convince Nurse Joy into having another battle to decide the Gym's fate, this time against Forrest. To everyone's surprise, Joy used Latias, a Legendary Pokémon, to face against Forrest. While Forrest ended up losing the battle, Joy recognized his skills and officially appointed him as the new Pewter Gym Leader, allowing the Gym to continue operating.
Flint's Golem first appeared when it battled against Lola's Marill to win back the Pewter Gym from her, but was swiftly defeated due to the type disadvantage.
It was revealed that Golem used to be a Graveler; in a battle against Lola's Poliwag, the precision of her Poliwag's Hydro Pump made Flint fall in love with Lola. It was later seen with Blastoise, holding up the new sign made of rock, which they broke.
Lola's Marill was used against Flint's Golem in a battle for the title of Gym Leader. Though greatly shaken by Golem's Earthquake, Marill was easily able to defeat its opponent.
In Grating Spaces!, Team Rocket planned to capture Marill and the other Pokémon of Lola's but failed. In DPS02, it, along with Brock's Sudowoodo, took on the role of Brock's youngest siblings' playmate.
Lola's Mantine was used against Brock's Onix in a battle to reclaim the Pewter Gym and allow it to still be a Rock-type Gym. Despite Onix being at a severe type disadvantage, though, it was able to defeat Mantine.
Rhyperior is currently the only known Pokémon of Forrest that he did not borrow from Brock. He used it in a battle against Nurse Joy's Latias. Despite fighting well, Rhyperior was ultimately defeated by the Legendary Pokémon.
The Pewter Gym appeared in File 1: Red, when Red traveled there to challenge it at the suggestion of Brock, whom he didn't know being the Gym Leader until meeting him at the Gym. After battling Brock's Geodude with his Charmander for a while, Red was advised by Brock to use a Pokémon with a better type matchup, prompting Red to switch to his Nidoran♂, whose super effective Double Kick was enough to defeat Geodude. Brock then switched to his Onix, which defeated Nidoran♂ with Bide, and then proceeded to defeat Red's Spearow, Rattata, and Metapod as well, but not before the Metapod had managed to land a String Shot on the Rock Snake Pokémon. Red was then forced to switch back to his Charmander. Thanks to Metapod's String Shot, Charmander was able to outspeed Onix and defeat it with Scratch, winning the match for Red and earning him the Boulder Badge and TM34 (Bide).
Like all Gyms in Pokémon Origins, this Gym has scoreboards featuring each Trainer's current Pokémon and their remaining HP. The Gym's battlefield's design is based on that of Pokémon FireRed and LeafGreen.
Brock used Geodude in his Gym battle against Red. It first battled Red's Charmander and managed to deal lots of damage to it before Red recalled it. Geodude then faced Red's Nidoran♂, but was quickly defeated by his Double Kick.
Brock used Onix in his Gym battle against Red. Onix managed to defeat four of Red's Pokémon in a quick succesion before finally being defeated by Red's Charmander.
Each challenger who wishes to battle Brock must first defeat several rounds of Gym Trainers. The outside of the Gym has the default design, but the inside consists of a boxing ring where the Trainers battle, a space for the crowd around it, and a room with windows where Brock can watch the battles.
Pewter Gym appeared in Onix is On!, where both Red and Blue challenged the Gym for the Boulder Badge, with both of them eventually beating the Gym Leader.
Onix is arguably Brock's most powerful Pokémon and is apparently well known for its speed, which causes shock waves when it moves. Onix was first used in battle against Red's Pika. Despite the type advantage, Onix was defeated by the small Electric type after it came to fight for Red of its own will. Three years later, Onix was sent out by Brock to use as a bridge when a bridge in the Tohjo Falls went out while Brock, Erika and Misty were heading to Johto, during which Misty is joined by Suicune. However, it itself collapsed when they were all attacked by a large group of Zubat, Golbat and Crobat. Once the group finally made it to the Indigo Plateau, Brock used Onix in his battle with Jasmine. It lost to Jasmine's Steelix, which he initially mistook as an Onix of a different variety due to its rock covering used to hide the fact that it was a new, undiscovered species at the time.
Brock owns six Geodude, nicknamed Geoone, Geotwo, Geothree, and so on. One of them appeared in Onix Is On! watching the battles with his Trainer. The other five first appeared in Putting It On The Line...Against Arcanine. They often grasp each others' wrists in order to circle around Brock to protect him. During the Gold, Silver & Crystal arc, they used their Magnitude to stop the Magnet Train. However, the impact sent it off course, causing it to almost crash before it was saved by Red's Snorlax.
Brock's Graveler was first seen as he watched Red battle the Trainers in the Pewter Gym. Later on, Brock gave him to Yellow, who named him Gravvy. He has since evolved it into a Golem.
Pewter Gym appeared in Bring Down the Powerful Opponent Onix!!. Red and Clefairy discovered Brock's collection of Pokémon and that Clefairy's cousin Pikachu was a part of his collection. After Clefairy beat Brock's Onix in a battle, Brock gave Pikachu to Red, along with a Boulder Badge.
The Electric Tale of Pikachu
Pewter Gym appeared in Play Misty For Me, where Ash entered the Gym and challenged Brock, eventually beating the Rock-type Gym Leader.
Pewter Gym appeared in PZ02. After arriving in Pewter City, Satoshi met one of Brock's students, who told him that Brock's toughness and rock-hard stubbornness were driving away potential challengers and even his own students, threatening the Gym's future. As such, Satoshi chose to challenge Brock. Despite his Charmander being at a type disadvantage against Brock's Onix, Satoshi eventually won by having Charmander attack Onix's weak spot at its horn, earning the young Trainer his first Badge. Seeing Satoshi's friendship with his Pokémon made Brock consider starting to soften up his forceful ways.
In the TCG
The Pewter Gym was featured in the TCG as both a Japan exclusive Theme Deck and as a card. The following is a list of cards mentioning or featuring Pewter City Gym in the Pokémon Trading Card Game.
Pokémon in Pewer Gym Cards listed with a blue background are only legal to use in the current Expanded format. Cards listed with a green background are legal to use in both the current Standard and Expanded formats.
