First appearance: "Pokémon, I Choose You!" (Indigo League, Episode 1, 1997) Latest appearance: "Lychee's Grand Trial! The Hardest Pokémon Match." (Sun & Moon, Episode 36, 2017)
2. Pikachu
First appearance: "Pokémon, I Choose You!" (Indigo League, Episode 1, 1997) Latest appearance: "Lychee's Grand Trial! The Hardest Pokémon Match." (Sun & Moon, Episode 36, 2017)
3. Professor Oak
First appearance: "Pokémon, I Choose You!" (Indigo League, Episode 1, 1997) Latest appearance: "Pokémon the Movie 20: I Choose You!" (2017)
4. Brock
First appearance: "Showdown in Pewter City" (Indigo League, Episode 5, 1997) Latest appearance: "Dent and Takeshi! Gyarados' Imperial Rage." (Best Wishes, Episode 27, 2013)
5. Misty
First appearance: "Pokémon, I Choose You!" (Indigo League, Episode 1, 1997) Latest appearance: "A Real Cleffa-Hanger" (Advanced Generation, Episode 134, 2005)