🎮 Random Pokemon Generator (Original 151)
By ToolNimba Editorial Team · Updated 2026-06-20
This random Pokemon generator pulls anywhere from 1 to 12 Pokemon at random from the original 151 Kanto roster, showing each one with its Pokedex number and type. Every pick in a single draw is unique, so you never get the same Pokemon twice in one list. You can narrow the pool to a single type, regenerate as many times as you like, and copy the result with one click.
What is the Random Pokemon Generator?
A random Pokemon generator is a small randomizer built around a fixed list of Pokemon. This tool uses the original 151, the Kanto Pokedex from Red, Blue, and Yellow, where each entry has a number from 1 to 151, a name, and one or two types. When you press Generate, the tool draws the number of Pokemon you asked for and guarantees there are no duplicates inside that draw, which is exactly what you want when you are building a team or a challenge list.
The randomness comes from your browser's cryptographic random number generator (crypto.getRandomValues), not the ordinary Math.random function. To turn raw random bytes into a fair index, the tool uses rejection sampling: it throws away the rare values that would slightly favor some Pokemon over others, so every eligible Pokemon has an equal chance of being chosen. The actual selection runs a partial Fisher-Yates shuffle, the standard, unbiased way to pick several distinct items from a list without ever repeating one.
The optional type filter changes the pool before any picking happens. A Pokemon counts as matching a type if that type appears in either of its slots, so Charizard shows up under both Fire and Flying. If you ask for more Pokemon than the filtered pool contains, for example 12 Dragon types when only a handful exist in the first 151, the tool simply returns every match instead of failing, and tells you it did so.
Because everything runs in your browser, there is no server call, no waiting, and no tracking. The list you copy is plain text, one Pokemon per line in the form #001 Bulbasaur (Grass/Poison), so it pastes cleanly into a doc, a spreadsheet, a stream overlay, or a chat message.
When to use it
- Building a surprise team for a Nuzlocke, randomizer run, or self-imposed challenge.
- Picking a daily mystery Pokemon to draw, name from memory, or guess in a quiz.
- Choosing a random starter or mascot for a stream, video, or classroom activity.
- Settling a friendly pick by drawing one Pokemon of a chosen type at random.
How to use the Random Pokemon Generator
- Enter how many Pokemon you want, from 1 to 12.
- Optionally choose a single type from the dropdown to limit the pool, or leave it on Any type.
- Press Generate to draw a fresh, no-repeat list of random Pokemon.
- Press Copy list to copy the result as plain text, or Generate again for a new draw.
Formula & method
Worked examples
You want a random party of 6 from any type.
- Set the count to 6 and leave the type filter on Any type.
- The pool is all 151 Pokemon, so N = 151.
- k = min(6, 151) = 6, so the tool draws 6 distinct Pokemon.
- Press Generate to see, for example, Snorlax, Gengar, Starmie, Arcanine, Pidgeot, and Mew.
Result: A team of 6 unique Pokemon, each shown with its dex number and type, ready to copy.
You ask for 12 Dragon-type Pokemon from the original 151.
- Set the count to 12 and choose Dragon as the type filter.
- Only Dratini, Dragonair, and Dragonite carry the Dragon type in Kanto, so N = 3.
- k = min(12, 3) = 3, since you cannot draw more unique Pokemon than exist.
- The tool returns all 3 and shows a note that only 3 Dragon Pokemon exist in the first 151.
Result: A list of all 3 Kanto Dragon-types, with a friendly note explaining why it is fewer than 12.
Roughly how many of the original 151 Pokemon carry each type (a type is counted if it appears in either slot)
| Type | Approx. count in Kanto | Notes |
|---|---|---|
| Water | 32 | The most common type in the original 151 |
| Normal | 24 | Includes many early-route Pokemon and Eevee |
| Poison | 33 | Often paired, as in Grass/Poison and Bug/Poison |
| Grass | 14 | Frequently appears alongside Poison |
| Fire | 12 | Includes the Charmander line and the legendary Moltres |
| Dragon | 3 | Only the Dratini evolution line |
The three Kanto starters and their final evolutions
| Starter | Final form | Type |
|---|---|---|
| Bulbasaur (#001) | Venusaur (#003) | Grass/Poison |
| Charmander (#004) | Charizard (#006) | Fire/Flying |
| Squirtle (#007) | Blastoise (#009) | Water |
Common mistakes to avoid
- Expecting repeats within a single draw. Each draw is guaranteed to have no duplicates, so requesting 6 always gives 6 different Pokemon. If you want the same Pokemon to be able to appear twice, generate two separate lists of 1 instead.
- Asking for more than the type pool can supply. If you filter by a rare type and request more Pokemon than exist, you get every match, not an error. Dragon, for instance, has only 3 members in the original 151.
- Thinking the type filter means primary type only. The filter matches either type slot. Choosing Flying includes dual-types like Charizard (Fire/Flying) and Gyarados (Water/Flying), not just pure Flying Pokemon.
- Assuming the list updates on its own. A new random list is drawn only when you press Generate or change the type. Reading the same result again does not reshuffle it, so press Generate whenever you want a fresh pick.
Glossary
- Pokedex number
- The fixed catalog number for each Pokemon. In the original 151 these run from 1 (Bulbasaur) to 151 (Mew).
- Kanto
- The region of the first Pokemon games, whose Pokedex is the original 151 Pokemon used by this generator.
- Dual type
- A Pokemon that has two types at once, such as Charizard being Fire and Flying. The type filter matches either slot.
- Fisher-Yates shuffle
- A standard algorithm that shuffles a list so every order is equally likely. A partial version is used here to pick several distinct items fairly.
- Rejection sampling
- A method that discards the few random values that would bias the result, so each Pokemon has an exactly equal chance of being chosen.
- Pool
- The set of Pokemon eligible to be drawn. It is all 151 by default, or only the Pokemon matching the selected type when a filter is applied.
Frequently asked questions
How many Pokemon can I generate at once?
Between 1 and 12 in a single draw, and every Pokemon in that draw is unique. If you need more, generate another list, which can include Pokemon from previous draws.
Which Pokemon does this generator use?
Only the original 151 from the Kanto Pokedex, numbered 1 to 151, from Bulbasaur to Mew. Each is shown with its dex number and one or two types.
Can the same Pokemon appear twice in one list?
No. Within a single Generate press the picks are always distinct. Duplicates can only occur if you compare two separate draws, since each draw is independent.
How does the type filter work?
It limits the pool to Pokemon that have the chosen type in either slot, then draws from that smaller pool. A dual-type like Gyarados (Water/Flying) counts for both Water and Flying.
Is the result actually random?
Yes. It uses the browser's cryptographic random generator with rejection sampling and a Fisher-Yates shuffle, so every eligible Pokemon has an equal chance and there is no hidden bias.
Does it work offline and is anything tracked?
The generator runs entirely in your browser with the full list built in, so it works without a network call and sends no data anywhere. The copied list is plain text you can paste anywhere.