Meet the first regional forms in Mizilea.
Hatenna (Mizilean Form) [Dark] – Sinner Pokemon
"A Pokemon twisted by dark Aku forces which feeds on negative emotions. When it finds a gullible enough trainer it uses the remnants of its psychic abilities to cause the trainer to commit evil deeds so it can feed on the generated negative emotions"
Hattrem (Mizilean Form) [Dark] – Condemned Pokemon
"It crawls using its clawed hair leaving a noxious gas which is said to amplify the aggression of humans and Pokemons alike"
Hatterene (Mizilean Form) [Dark/Poison] – Infernal Tyrantess Pokemon
"Standing tall, this dangerous Pokemon's shadowy arms have venom-tipped claws that cause excruciating pain in its victim for its own amusement"
by Tae_Yamada74