Throughout his extensive journey in the Pokémon anime, Ash’s most steadfast ally has undeniably been Brock. Notably, Brock appears in over 500 episodes, a milestone reached only by Ash, Pikachu, and Team Rocket. Though he may not always be front and center, Brock has consistently found ways to shine, showcasing his skills and contributions to the group.
Brock often assumes a vital support role within Ash’s ensemble, leveraging his big brother instincts to ensure that everyone is fed and on schedule. As a former gym leader and skilled Pokémon breeder, later transitioning to a Pokémon doctor, Brock provides crucial guidance throughout their adventures. His numerous key accomplishments throughout the series highlight his importance.
10 Leave It To Brocko!
Pokémon Diamond and Pearl, Episode #14
In this episode, a lost Nuzleaf wreaks havoc out of fear of humans. Brock steps in, applying his understanding of Pokémon behavior to soothe the creature, employing techniques like whistling a calming tune. Through the efforts of his Bonsly, Brock earns Nuzleaf’s trust. However, when Team Rocket attacks, Brock’s Bonsly evolves, enabling them to escape while Brock single-handedly defeats Team Rocket. Ultimately, Nuzleaf is safely returned home.
This episode serves as a testament to Brock’s exceptional ability with Pokémon, even those that are wild and distrustful of humans. It marks a pivotal moment in Brock’s journey towards becoming a Pokémon doctor, reflecting his innate desire to assist endangered Pokémon. Additionally, it’s one of the few episodes showcasing an on-screen evolution, emphasizing its significance in the series.
9 Just Waiting On a Friend
Pokémon the Original Series, Episode #232
While exploring a mountain range, Ash, Brock, and Misty stumble upon an enigmatic mansion inhabited by a woman named Lokoko, with whom Brock quickly becomes infatuated. She surprisingly reciprocates his affections and even agrees to wed him. However, Ash and Misty uncover unsettling clues about the mansion’s origins and the resemblance of its former owner to Brock, who has been absent for 200 years. Ultimately, Lokoko is revealed to be an illusion created by the owner’s Ninetales, which has waited all this time for his return.
8 Showdown in Pewter City
Pokémon the Original Series, Episode #5
Brock’s debut episode introduces him as the Pewter City gym leader. When Ash approaches to battle, he quickly forfeits against Brock’s massive Onix. While Ash feels dejected, a mysterious figure reveals Brock’s challenging home life, managing nine younger siblings on his own. Reloading with newfound strategies, Ash surprises Brock with his Pikachu’s advanced power, eventually claiming victory through clever tactics. Brock’s father then appears, endorsing Brock to journey with Ash while he cares for the siblings.
This episode provides a powerful introduction to Brock, portraying him as both a capable gym leader and a responsible older brother. His exaggerated domestic responsibilities serve to illustrate his nurturing nature, setting a tone for his character development throughout the series.
7 Love, Totodile Style
Pokémon the Original Series, Episode #153
Ash’s Totodile develops a crush on Azumarill during their lake excursions but struggles to capture her attention. When Azumarill’s trainer arrives, Brock finds himself smitten as well. He decides to help Totodile impress Azumarill, but Team Rocket intervenes, capturing her. Totodile bravely rescues Azumarill, but soon realizes that her affections lie with Golduck. Brock offers comfort, imparting wisdom on the value of striving for love, even in adversity.
While often portrayed humorously regarding his romantic pursuits, Brock’s advice in this situation reflects a genuine understanding of love and highlights his maturity in recognizing when to move forward.
6 When Regions Collide
Pokémon Sun & Moon, Episode #43
Brock makes a triumphant return alongside Misty in this episode of Sun & Moon. Here, he showcases his mastery of Mega Evolution through a riveting battle against Ash’s acquaintance, Kiawe. Utilizing Steelix, Brock exhibits his exceptional skills as Steelix Mega Evolves and withstands a Z-move from Kiawe’s Turtonator, ultimately securing victory. This return of beloved characters is significant, reflecting Brock’s refined battle prowess alongside his evolving ambitions of becoming a Pokémon Doctor.
5 Poké Ball Peril
Pokémon the Original Series, Episode #83
Arriving in the Orange Islands, Brock is smitten with Professor Ivy, demonstrating exceptional care for Pokémon by preparing a special meal for a picky Butterfree. As he immerses himself in domestic chores within the lab, he witnesses Professor Ivy risk her safety to save an injured Pokémon. Ultimately, Brock decides to stay behind when Ash and Misty leave, marking a significant turning point in his development.
This decision underscores Brock’s independent goals and demonstrates his ability to forge his own path rather than merely following Ash. Although sentiment plays a role, his choice reflects maturity and the sense of responsibility forged through his upbringing.
4 A Family That Battles Together Stays Together!
Pokémon Chronicles, Episode #5
This special episode centers on Brock’s return to Pewter City after his adventures in Johto. He discovers that his mother has returned, transforming the gym into a Water-type establishment. A family conflict ensues as Brock attempts to reclaim his gym’s identity through confrontation. He ultimately defeats his mother, reestablishing the gym as a Rock-type arena.
This episode sheds light on Brock’s life story, explaining the profound impact his parents’ absence had on his character development. Growing up too soon is evident in Brock, who automatically fills the role of a nurturing sibling, a process that has deeply influenced his personality.
3 Pokémon Fashion Flash
Pokémon the Original Series, Episode #28
In this episode, Brock requests a detour to visit a well-known site among Pokémon breeders. Here, he encounters Suzie, a renowned breeder troubled by competition from Team Rocket’s new salon. Brock assists Suzie in regaining her clientele by sharing effective Pokémon breeding techniques. As the episode unfolds, Suzie decides to embark on her own journey, entrusting Brock with her Vulpix.
This marks a cherished moment where Brock’s abilities as a Pokémon breeder come to the forefront, solidifying his aspirations and passion for the craft, with Suzie’s faith in him representing a stepping stone in his growth.
2 Heart of Fire! Heart of Stone!
Pokémon Sun & Moon, Episode #103
Brock and Misty reunite with Ash during his stay in the Alola region. They join Ash’s friends at Kiawe’s family farm, where they encounter an injured baby Kangaskhan. Brock taps into his knowledge as a Pokémon Doctor and employs a Comfey gifted by Nurse Joy to soothe the enraged mother and treat the injury. As they bond, Brock engages in a battle with Olivia, a fellow Rock-type trainer, culminating in a collaboration to thwart Team Rocket.
1 The Brockster Is In!
Pokémon Diamond and Pearl, Episode #190
As the Sinnoh Pokémon League concludes, Ash, Brock, and Dawn contemplate the end of their journey. Team Rocket stirs trouble, provoking a swarm of Tentacruel that injures a trainer’s baby Pokémon. Brock steps up, attempting to treat their injuries despite lacking essential berries. In a stroke of fate, Brock’s Happiny evolves into Chansey, enabling her to use Soft Boiled, healing the afflicted baby Pokémon.
This pivotal episode underscores Brock’s aspiration to become a Pokémon Doctor, marking a significant evolution in his character trajectory as he gears toward completing his formal training. His thoughtful decision to focus on this new path ultimately alters the course of his character development, making this episode one of the most memorable featuring Brock in the entire Pokémon series.