Nincada
The Trainee Pokémon
Type: Bug/Ground
Official Registration #: 290
Entry: For most of its life, this larval pokémon hatches and lives underground, where it feeds on nutrient-rich roots in preparation for its evolution. However, because of its primarily subterranean lifestyle, the species is also largely blind, relying on sensory information transmitted to its antennae to navigate. Needless to say, removing one from its native habitat to study it in a well-lit, above-ground laboratory is … perhaps not the best of ideas, no.
Ninjask
The Ninja Pokémon
Type: Bug/Flying
Official Registration #: 291
Entry: The evolved form of nincada, by battle experience. Ninjask is known for two things. First, its speed: it moves at a lightning-fast pace, sometimes even to a point where it becomes too fast to observe by the human eye. Second, it’s a stubborn and proud pokémon and will happily express its displeasure with a command by crying loudly, at volumes that could damage a human’s hearing. In other words, ninjask is better known as “that one pokémon you may be tempted to train due to its competitive, speed-based abilities, except you will very likely regret attempting to train it due to everything else about it.”
Shedinja
The Shed Pokémon
Type: Bug/Ghost
Official Registration #: 292
Entry: The husk of a nincada, left behind upon its evolution. Despite being made of a thin chitin, this terrifying pokémon possesses an ability that renders it invulnerable to everything but fire, ghost, dark, and flying elemental abilities, as well as indirect attacks. Additionally, it does not apparently possess a soul, and perhaps because of this, the strange forces that animate it are said to suck in the souls of anyone who looks into the cavity on its back. Luckily, whenever sending this pokémon out to battle—given the amount of time it may take for an opponent to defeat your shedinja, as well as the position of your pokémon relative to you during a match—staring directly into the hole that will suck out your spirit is nigh inevitable.
The Pokédex According to Bill 