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DexTeam

Gen 1 Pokémon Team Builder

Only Pokémon you can use in Red, Blue & Yellow appear in the picker (151 in total), move lists follow Gen 1 learnsets, and the analysis uses the original Gen 1 type chart (Ghost doesn't affect Psychic, Bug and Poison hit each other super-effectively, no Dark, Steel or Fairy). Abilities did not exist yet, so none are applied.

Add a Pokémon to start

Weaknesses, coverage, threats and suggestions update instantly as you build.

Also try:Random Pokémon for a teamNuzlocke tracker → analyze your partyDamage calculatorType chart

What this Gen 1 · RBY team builder does

  • 151 Pokémon available in Gen 1 · RBY
  • 15-type Gen 1 chart
  • No abilities or held-item effects in the analysis
  • Gen 1 learnsets in the move picker

How to build a balanced team in 60 seconds

  1. Pick your game above so only legal Pokémon, moves and the right type chart are used.
  2. Add your must-have Pokémon. Tap a slot, type a few letters (English, 中文, 日本語, Français, Deutsch, Español or 한국어 all work) and press Enter.
  3. Read the red rows in the Weaknesses tab — a type is a problem when three or more Pokémon are weak to it and nothing resists it.
  4. Use Smart picks. The suggestions under your team are ranked by how much they reduce shared weaknesses and fill coverage gaps.
  5. Check Coverage and Threats, add moves, then Share the link or export to Showdown.

FAQ

Which Pokémon can I use in Red, Blue & Yellow?

The picker shows the 151 Pokémon and forms available in Red, Blue & Yellow. Switch to National Dex to plan with every Pokémon.

Does the builder use the right type chart for this generation?

Yes — it uses the original Gen 1 type chart (Ghost doesn't affect Psychic, Bug and Poison hit each other super-effectively, no Dark, Steel or Fairy).

How does the team builder calculate weaknesses?

For each of the 18 attacking types it multiplies the type-chart values against every Pokémon's typing, then applies abilities that change incoming damage — Levitate, Flash Fire, Water Absorb, Volt Absorb, Storm Drain, Sap Sipper, Thick Fat, Heatproof, Purifying Salt, Filter and more. A type is flagged red when three or more of your Pokémon are weak to it and at most one resists it.

Can I import and export Pokémon Showdown teams?

Yes. Paste any Showdown or PokéPaste text into Import and the builder keeps nicknames, items, abilities, Tera Types, EVs, IVs, natures, levels and moves. Export gives you text you can paste straight back into Showdown's Teambuilder.

How do I share my team?

Press Share to copy a link — the whole team is encoded in the URL, so anyone who opens it sees the same six Pokémon, sets and analysis. Image creates a 1200×675 team card that is ready for Reddit, Discord or X.

Is it free? Do I need an account?

It is completely free and has no sign-up. Teams are saved in your browser for each game and in the share link; nothing is uploaded.

Want to check a single matchup? Use the type chart & type wheel, look up any Pokémon's weaknesses, or roll a random team.