Loona

There are at least 3 artists named Loona:

1) LOONA, sometimes stylized as LOOΠΔ (Hangul: 이달의 소녀; lit. Girl of the Month) was a 12 membered South Korean girl group formerly under BlockBerryCreative, a subsidiary of Polaris Entertainment. The group is on an indefinite hiatus as a result of all 12 members winning their contract termination lawsuits, and all (aside from Yves and Chuu who are pursuing a solo career) have spread across four different companies at the time of writing this. Read more on Last.fm