How Old Are Ash & His Companions At the End of Their Pokémon Journey?

Pokemon Journeys Brings Ash's Classic Pokemon Back to the Anime

Why does Ash keep getting new friends and leaving his old friends in Pokemon? - Quora

Traveling companions, Pokémon Wiki

Legends of Pokémon Performance

Pokemon Fans Will See Ash Again, Anime Exec Confirms

Pokémon' 25th-anniversary video celebrates Ash's journey 'across the land searching far and wide

How old is Ash in Pokemon Journeys? Explained

Pokemon Trainers Who Can Or Can't Beat Ash

UPDATED: My version of Ash and his companion's Pokemon teams from Gen 1-8 (including a hypothetical Gen 9 Ash Team.) Thoughts? : r/pokemonanime

What if the Team Rocket organization is finally destroyed forever in Pokémon anime? - Quora

Ash Ketchum, Pokémon Wiki

What Happened To Ash's Past Companions?

Pokémon' final episode will see return of Ash's original rival from pilot