Shadow is the former pet cat of Proe.
Shadow was a typical cat. He was aloof, curious, and enjoyed the company of his humans. Unfortunately, Proe was forced to leave their cat behind when they moved out of their parent's house. It is unknown what happened to Shadow since then, but Proe thinks of him often.
- Despite supposedly having been left behind when Proe moved out, Shadow had not been seen in their home for quite some time before Proe left. Why this is the case is a mystery.