Hau's Ariados

Ariados is the seventh pokemon that Hau caught in the Alola Region

Prior to Catching
In the Episode, "Mysteries of Ula'Ula" a running gag happened throughout the episode, where an Ariados kept tormenting the group. After encountering it for the fourth time, Hau defeats and captures it.

Trivia

 * Ariados knows the most moves as of it's debut than any other of Hau's pokemon, knowing four different moves in it's debut episode