"We need to leave, NOW"
Capable of having anywhere from 1 to 20 heads. Exceptionally large creatures, known to be quite powerful. Capable of rapid healing as all Hydras are. Cryohydras are in particular known for the icy blasts it's capable of firing from each of its heads.
Genetics and Reproduction
Reproduces by "budding", asexually. The regenerative flesh that grows new heads will often times grow an entire new hydra.