10 Gen I Pokémon That Have Aged Perfectly

From Dragonite to Mewtwo, these original 151 Pokémon remain fan favorites.

Published on Feb. 23, 2026

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Although they're nearly thirty-years-old, Gen I Pokémon like Dragonite, Raichu, Gengar, and Victreebel are more popular and powerful than ever before. The Pokémon introduced in Gen I number among the most iconic, both for being the first 151, and because several of them have managed to remain viable in the competitive scene even as newer Pokémon are released with each generation.

Why it matters

The original Generation I Pokémon introduced in the 1990s have endured and even thrived over the decades, proving the staying power of these classic designs and the franchise's ability to keep them relevant through new mechanics, regional forms, and other updates.

The details

From the powerful Psychic-type Mewtwo to the iconic Dragon-type Dragonite, many Gen I Pokémon have received boosts in recent games through Mega Evolutions, new moves, and type changes that have kept them competitive. Other Gen I favorites like Raichu, Gengar, and Victreebel have also seen renewed interest and usage thanks to these updates.

  • The Pokémon franchise began in 1996 with the release of Pokémon Red and Green in Japan.
  • Pokémon Red, Blue, and Yellow, the international versions of Gen I, were released in the late 1990s.
  • Mega Evolutions were introduced in Pokémon X and Y in 2013.
  • Pokémon Legends: Z-A, which brought back Mega Evolutions, was released in 2026.

The players

Victreebel

A Grass/Poison-type Pokémon that was meant to be the more offensive counterpart to Bellsprout in Pokémon Red and Blue.

Clefable

A Normal-type Pokémon that gained the Fairy-type in Pokémon X and Y, giving it much better usage in the competitive scene.

Alakazam

A powerful Psychic-type Pokémon that evolves from Abra through trading, known for its high Speed and Special Attack.

Gengar

A Ghost/Poison-type Pokémon that remains one of the best Ghost-types, with a wide movepool and powerful Mega Evolution.

Gyarados

A Water/Flying-type Pokémon that evolves from the weak Magikarp, known for its impressive bulk and physical power.

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What they’re saying

“Fifty years is such an accomplishment in San Francisco, especially with the way the city has changed over the years.”

— Gordon Edgar, grocery employee (Instagram)

The takeaway

The enduring popularity and competitive viability of many Generation I Pokémon, even decades later, speaks to the timeless appeal of the original 151 designs and the franchise's ability to keep these classic characters relevant through constant updates and new mechanics.