Hydra (From "Cytus II")
Akira Complex, James Landino
Hydra
Rhythmstar & Pawz
HYDRA
MYTH & ROID
HYDRA(OVERLORD Ⅱ ED) 圈9.ver（Cover MYTH & ROID）
圈9
Hydra
James Landino, Akira Complex
Hydra
F-777
HYDRA（instrumental）
MYTH & ROID
HYUDRA
松本晃彦
HYDRA
PLATINUM HYDRA, Hooligans product
Hydra (Reimagining)
Hydra Lerna
HYDRA
PLATINUM HYDRA, Hooligans product