Mr. Squirrel was the husband of Jess and the father of Sam at Redwall Abbey. Along with Jess, he was an old friend of Abbot Mortimer.
Strangely, he did not appear in Mattimeo, despite apparently surviving the final battle at Redwall and having his son kidnapped and his wife away.
Mr. Squirrel is a kind and loving father and husband, although he is less adventurous then his wife. He is also brave, as seen when he shouted at the rats.
- When asked about the character on Redwall.org, Brian Jacques responded that "no particular story is attached to Mr. Squirrel."