Hydra is the many headed beast of Alchemi, Atrica, Chalicea, Chameleon, Elgar, Encota, Exit, Foxglove, Gazza, Harold, Hippogryph, Jaffa, Kelotoph, Phibs, Prolixic, Radler, Shabbo, Silvanus, Simon, Skinny, Starhorse and Windsurfer.