! Non-Canon Alert!
The subject of this article or section originates from non-canonical sources. To find out about what is considered "canon" see LOTR:Canon.

a pack of water leapers or vile creatures

The Vile Creature is an enemy creature of the The Hobbit (2003 video game).

They are armless two-legged frog-dinosaur like fusions that appear in the Roast Mutton level. At some point they breathe poisonous gas at Bilbo. In one area, they also fight wolves.It is unknown if any of them work for Dark Powers.