Agent W is a whale. Like Perry the Platypus, it is an agent for the O.W.C.A.. It is first seen when Major Monogram is briefing Perry for his mission in a sauna. ("She's the Mayor") It also "ate" Dr. Doofenshmirtz when he escaped from an island in a boat. ("Phineas and Ferb Hawaiian Vacation")
It made another appearance in "Rollercoaster: The Musical!".
- Its second appearance differs from its first appearance.
- According to its secret file, it is not afraid to take a big bite out of a mission (or Doof). Enjoys a steam after a long day of secret agent-ing. And it is still looking for a fedora large enough for its head. (Where's My Perry?)
- However it did finally manage to find a fedora big enough for its head, since it is wearing one in "O.W.C.A. Files".
- "She's the Mayor" (First appearance)
- "Phineas and Ferb Hawaiian Vacation"
- "Rollercoaster: The Musical!"
- "O.W.C.A. Files"
- Where's My Perry? (Agent File)