Already garnering attention as Lee Hyori’s labelmates, the fabulous rookie ladies of B2M Entertainment, SPICA finally kicked off their long-awaited debut on this week's Music Bank.

Although “Potently” was their first released MV, the group has never promoted the track. Following up their debut single, SPICA released their new single "Russian Roulette". Living up to their name, which stands for “Sonic Princesses Infinitely Creating Anarchy,” these ladies are definitely one dangerous rookie group!

Catch the performance below!