Mercy

Real name: (cannot be pronounced by humans. Described as: the sound of a stream’s steady trickling)

The most reserved of all Methane Fish. She is very shy, and hardly talks to anyone except her own family. Her closest friend since childhood was the young headstrong orphan, Lakeguts. Before the arrival of Ai, she was the only person who Lakeguts had a connection to. Since the final invasion by the humans on Titan, she has disappeared for years… Whether she is living or not, her status is uncertain. (She is inspired by the original BIA, whose concepts belong to Anthony... though she is a major character in Lakeguts' life, she only plays a minor role in the cannon story timeline)