- Don't be a thief!
- Kleptomaniac Hero: He has a habit of whipping out Pokeballs on other trainers. The trope, however, is decently exploited throughout the run and especially against the Elite Four; he usually starts throwing balls when he wants to stall for time.
- The Quiet One: So much so that Professor Oak couldn't even hear him when he gave his name, and mistook his affirmation that he'd give it as the name itself.note
- You Dirty Rat!: Had an association with rats after catching a number of them on Day 1, which persisted long after all but one had been boxed.
GHQQ Nee., the Charizard (Gnocchi, Acidzard)
Kay's starter. Was deposited on Day 1 as a Charmander, but was eventually retrieved and became a consistent part of the team.
- Poisonous Person: The devs thought they'd removed all ability to teach non-Gen I moves to the team, but they forgot about the Ultimate Move Tutor on Two Island, and as such, the Mob managed to teach Blast Burn to Gnocchi. As Blast Burn's ID number is 307 (or 133 in hexadecimal), it was correctly assumed that it would turn into Acid (which has a move ID of 51, 033 in hexadecimal) the next time the game was switched back to Generation I. The Mob decided to keep it for the novelty of having an illegal moveset. It was eventually overwritten during the revisit.
- Supporting Protagonist: Gnocchi may have been the starter, but he was far from the star.
One of many Rattata that Kay captured on Day 1, he was the only one to stick around.
- Crutch Character: Early on, he looked to be following in the footsteps of Bird Jesus as a Com Mon who was the team's heavy, but ended up losing his best moves and was one of the lower-leveled members of the final team, bordering on The Load by the end.
- Kamehame Hadoken: Learned Hyper Beam later in the game, allowing him to do a lot of damage but fall quickly to anything that survived.
- Making a Splash: During Kay's trip through Pokémon Tower, he found himself with four team members completely walled by the Ghost-type's immunity to Normal and Fighting, so Jackass was taught Water Gun as a coverage move. He kept it all the way through the game.
- Rat King: One of his nicknames, as the leader of the "Rat Pack".
Dkklll the Gyarados (Dr. Kill)
Like many Kanto protagonists before him, Kay purchased a Magikarp from the salesman at Mt. Moon. Unlike most of them, he managed to raise her to become a Gyarados.
DD) the Hitmonlee (DD)
A Hitmonlee given to Kay by the leader of the Fighting Dojo, he proved his worth early due to his effectiveness against Giovanni's Celadon City team but eventually became a liability and was the lowest-leveled member of the party at the end. His name is pronounced "Double-D", not "Dee-Dee". Was previously named AC/DC and KA.
- Confusion Fu: Was capable of this thanks to Metronome, however it was rarely used.
- Extremity Extremist: Other than the aforementioned Metronome, DD never learned a move that wasn't Fighting-type and related to kicking.
- The Worf Effect: Was a powerful battler when he first arrived, but was quickly beaten in most late-game situations.
X the Chansey (Xhansey)
A Chansey caught in the Safari Zone, she carried the team through the Generation I Elite Four with her tactical moveset. Evolved into a Blissey during the revisit.
- An Ice Person: Her lone direct damaging move was Ice Beam. This proved far more useful in Gen I than in Gen III, as Chansey's massive Special became its Special Defense when the stat was split in Gen II.
- Battleaxe Nurse: The Chansey line is associated with nurses thanks in large part to the anime, and X did indeed have the line's Signature Move Softboiled, which can be used as a field move to donate health to a teammate, but she preferred to use her medical knowledge to poison opponents.
- Big Eater: Her "Leftovers" skill allows her to regain health after every turn. By the nature of the game, that means that she eats to gain health nearly every fight.
- Gradual Grinder: Toxic, Double Team, Softboiled. Commence "cancer match".
- Healing Factor: Knew Softboiled to keep her around while the Toxic timer racked up.
- The Hero: For the Gen I Elite Four. Settled into the role of The Lancer for Gen III, where the Elite Four had better coverage to take advantage of her low physical defense and were more likely to use Full Restores rather than Hyper Potions, limiting Toxic's usefulness.
- Naughty Is Good: Her Nature in Gen III was Naughty, leading to "naughty nurse" jokes.
- Poisonous Person: Preferred to use Toxic over her lone direct damaging move, which could inflict a different status. Although in Gen I, her other status was also basically an instant win condition.
AA-×ZZG—♂ the Starmie
The final addition to Kay's team. Like Kay, it had very little characterization.
- The Ace: Starmie's wide variety of coverage moves gave it something for all of the Elite Four: Thunder for Lorelei's Water-types; Surf and Psychic for Bruno's Rock- and Fighting-types; Psychic for Agatha's Poison-types, and Blizzard for Lance's Dragon- and Flying-types. As such, it was the highest-leveled member of the team by the end of the Gen III Elite Four.
- Imperial Stormtrooper Marksmanship Academy: The biggest weakness that it faced was that it used the powerful, inaccurate Blizzard and Thunder over their slightly weaker but far more reliable counterparts Ice Beam and Thunderbolt, which were instead given to X and Dr. Kill respectively.
- Sixth Ranger: Captured at around the same time as X, but not added to the party as quickly.