Hank is the hippopotamus that swallowed Jason Walker. He is the only hippo at the Vista Point Zoo, and was turning 40 in the summer. Hank was described as being very lazy, and if he was replaced with a statue, people would not be able to tell the difference.

Hank was Jason's portal to Lyrian. Jason heard the Giddy Nine's music coming from his mouth, so Jason peered over the railing. He accidentally fell in, and the hippo swallowed him.

The Blind King calls hippos water horses.

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