Crogall
The Crogall is a Scottish water beast of Highland lochs and rivers, resembling a kelpie but more animalistic and brutal. It appears as a dark, shaggy water horse or massive hound with seaweed-tangled mane, glowing marsh-fire eyes, reversed hooves, and jagged shell-like teeth. In human form: a soaked, wild-eyed man with water plants in his hair.