Ghost (type)

The Ghost type is one of the eighteen official Pokémon types. While there are no notable Trainers who specialize in Ghost-type Pokémon, Team Lunar's commanders and Leader are known to have some on their teams; these include Scarlett's Skreech/Banshreek, Marcus's Gravole/Specstone and Skeledeep, and Derek's Rottoween and Mega Elestomp.

Pokémon
There are 25 Ghost-type Pokémon in the Rikoto Dex, which is 6.98% of all Pokémon (not counting forms).

Trivia

 * The Ghost-type is one of the two Types that's super effective against itself; the other Type is Dragon.