Agent hat icon
Agent M
Mouse agent
Agent M with other agents
Gender: Unknown
Height: Taller than Agent W (Worm)
Nationality: American
Hometown: Possibly Danville
Nemesis: Unnamed fat scientist
Professional Information
  Secret agent
Friends and Family
Major Monogram
Behind the Scenes
First Appearance:
  "Isabella and the Temple of Sap"
Last Appearance:
  "O.W.C.A. Files"

The Mouse Agent is a small-sized agent has been seen in some episodes. In its first appearance, it's seen riding the elevator alongside the unnamed bear agent, unnamed crocodile agent, and others ("Isabella and the Temple of Sap"). It appeared again in "Phineas and Ferb Christmas Vacation!" dancing with the other agents. Its next appearance wouldn't be until Phineas and Ferb The Movie: Across the 2nd Dimension, where it's seen attacking Normbots alongside its fellow agents. It had abs and bulky arm muscles. ("Phineas and Ferb Save Summer ")


Its appearance is that of an ordinary mouse with a fedora.


Major Monogram

Its boss in the O.W.C.A..

Other agents

Agent M can team with the other Agents well, as it appears, in the 2nd Dimension movie. It is on good terms with Perry, and others, even its actual predators, so it can be assumed it does have friends in the Agency.