Ever dreamed of designing your very own Pokémon? This guide is your stepping stone! With a myriad of type combinations, movesets, and evolutions at your disposal, the creative possibilities are boundless. The Pokémon universe is teeming with undiscovered creatures, and your creation could be the next big thing!
Steps

Select a Pokémon type such as fire, water, or grass. Remember, more unique types often result in more imaginative designs. For instance, as there are no Poison/Steel types, a Pokémon with this combination would naturally stand out more than a Bug/Flying or Water type.

Decide on a concept or theme for your Pokémon. Gastly embodies the essence of gas, while Piplup takes inspiration from penguins. However, let your imagination run wild; Skarmory, for example, is influenced by both armor and birds. Its design nuances are subtle, making it distinctive yet undeniably Pokémon-like.

Decide on a unique name for your Pokémon. Pokémon names are usually clever combinations that reflect the creature's characteristics. For instance, 'Pikachu' combines 'Pika' meaning 'Flash' with 'Chu' meaning 'Squeak.' Similarly, Kartana's name comes from the Sanskrit word for 'Cutting,' and it also incorporates 'Katana,' the Japanese sword, and 'Charta,' Latin for 'Paper,' which all relate to Kartana's design. Given the rarity of Grass/Steel types, a well-thought-out name and design, like Kartana's, can be especially impactful. If inspiration doesn't strike immediately, consider doing some research or waiting until you've fleshed out more of your Pokémon's details.

Sketch your Pokémon's appearance. Feel free to get creative with the look. Consider your Pokémon's type when designing its appearance. For instance, Ghost and Dark types often have darker, eerie looks, while Fire types feature warmer colors and perhaps even flames in their design. However, keep in mind that Pokémon designs tend to be cartoonish; overly realistic details can make the Pokémon seem unsettling rather than endearing. Take Octillery as an example, which has a warm color palette despite being a Water type, or Tapu Bulu, which lacks green but is still a Grass type.

Determine if your Pokémon will evolve or remain unevolved, or if it's a Legendary Pokémon. It's entirely up to you whether your Pokémon evolves or not. If it does evolve, consider the method. Will it have a pre-evolution like Pichu or Cleffa? Evolution can occur through various means, such as leveling up, using held items, building friendship, using evolutionary stones, trading, being in specific weather or time conditions, or even when another specific Pokémon is in the party. Some Pokémon can also have multiple evolution paths based on factors like stats, gender, or personality value. Occasionally, a Pokémon may even change type upon evolving, like Skorupi evolving into Drapion.

Consider the moves your Pokémon will learn. Think about both level-up moves and TM/HM moves. If applicable, also consider breeding and tutoring moves.

For added depth, include details like catch rate, gender ratio, species name (e.g., Pikachu as the Mouse Pokémon), Pokédex number, egg groups, hatch time, height, weight, experience yield, EV yield, body style, footprint, Pokédex color, leveling rate, possible abilities, Mega evolutions, exclusive Z-moves, names in other languages (Japanese, German, French, etc.), base stats, Pokédex entry text, shiny forms, event moves, moves from prior evolutions, trivia, name origin, and design inspiration. This showcases the extensive thought process that goes into each Pokémon design by Nintendo!
Guidance
- Continue brainstorming at your leisure. Feel free to modify aspects of your Pokémon as you see fit.
- Visualize your Pokémon in potential episodes to influence its behavior, appearance, and natural habitat.
- Explore various Pokémon designs. For instance, while creatures like Absol and Lucario might resemble wolves, a standard wolf isn't considered a Pokémon.