Mareanie appears to be based on a crown-of-thorns starfish, a venomous starfish which preys on coral polyps (similar to how Mareanie preys on Corsola).
Mareanie may be a combination of marine and meanie.
Hidoide may be a combination of 酷い hidoi (cruel) and 海星 hitode (sea star).
No: 747
English Name: Mareanie
Japanese Name: Hidoide
Generation: 7
Type: Poison, Water
Species: Brutal Star Pokémon
Abilities: Limber, Merciless, Regenerator (hidden ability)
Evolution: Mareanie > Toxapex
Mareanie is a starfish-like Pokémon with a purple stalk-like body and ten drooping tentacles that resembles hair. It has a blue and purple color scheme, and what appears to be a gloomy expression. It has three teeth and blue eyes with yellow sclera and pupils. Each tentacle has three spines, except the one above its face, which is shorter than the others and has only two. When Mareanie attacks, this tentacle may extend to the length of the others and gain a third spine. It also has an additional yellow spine on the top of its head.
Mareanie is known to actively hunt and prey on Corsola. Its main tactic is to harass it until the Corsola sheds its horns. As seen in the anime, Mareanie attacks first by launching onto the prey’s face with all of its ten tentacles, then releasing the poison through its spikes.
POKEDEX ENTRIES
Pokemon SUN: It plunges the poison spike on its head into its prey. When the prey has weakened, Mareanie deals the finishing blow with its 10 tentacles.
Pokemon MOON: It’s found crawling on beaches and seafloors. The coral that grows on Corsola’s head is as good as a five-star banquet to this Pokémon.
