Agent S

Agent S is a peppy squirrel villager from the Animal Crossing series. She was introduced in the 2003 Japanese exclusive Animal Forest e+, and reappeared in later games in the series. The "S" in her name most likely refers to her species, giving her the full title of Agent Squirrel. It is also possible that the "S" stands for sidekick, supporting the theory that she is Kid Cat's sidekick, also supported by her catchphrase and Japanese name.