Henry 2.0

Henry 2.0 is Leviathan's pet goldfish who first appeared in Lesson 1-13. Henry 2.0 lives in a fish bowl in Leviathan's room. Levi got Henry 2.0 after Henry 1.0 went missing as a snakelet. Like Henry 1.0, Henry 2.0 is named after the main character of The Tale of the Seven Lords. The "2.0" comes from the fact that he's the 2nd Henry after Henry 1.0.

Story
Note: this section may include spoilers

Main Story and Events
Henry 2.0 is one of the only friends Levi has, so Levi oftens talks to him about various things.