Details: After capturing all the Buzzwole in Melemele Meadow, you must report back to Anabel and Looker in the hotel on Route 2. Anabel will inform you that Wicke now has the information on Buzzwole, before Looker again leaves with the plan of getting food for all of you. However, he quickly rushes back in with New details on another Ultra Beast. This Time, the sightings are coming from Akala Island. He and Anabel then suggest meeting up at the original hotel on Route 8.
Once there, the Final Trial Captain whom you've never had the chance to Battle before that Time, Mina, informs both you and Looker that she knows the details and whereabouts for the next Ultra Beast. However, before telling you, she finally requests to have the battle she promised your character so long ago. She specializes in none other than Fairy Type Pokemon, apparent from the Z Crystal she gave you when you first met.
Captain Mina - Level 61 Klefki, Level 61 Wigglytuff, Level 61 Granbull, Level 61 Shiinotic, Level 61 Ribombee
After defeating her, Mina will quickly tell you about the next Ultra Beast you must find...