I do not own Phantasy Star Online or anything related to it. Everything to do with the series belongs to SEGA and Sonic Team, and I do not claim ownership of any of it. Played during battles in the Subterranean Desert in Episode 4.
I was enjoying the song until it occurred to me that a Mericarol/Girtablulu hybrid would put Lovecraft's most terrifying monsters to shame. Happy Halloween to me DX