Agent W is a worm working for the O.W.C.A.
His real name is not known. Since Agent C is a chicken, it is likely she often thinks about eating Agent W. ("Traffic Cam Caper") In "The Beak", when Khaka Peü Peü dropped lots of worms on Danville they all were wearing Agency fedoras. Like Agent S, he might be assigned to low risk criminals, or possibly be assigned to stealth missions due to his size. Agent W made a cameo appearance in Backyard Hodge Podge. Agent W is in the game Where's My Perry as an Agent File.
- His agent file says not partner him with Agent C because his devil-may-care attitude clashes with her no-nonsense thinking. ("Where's My Perry?")
- "Traffic Cam Caper" (First appearance)
- "The Beak" (cameo, thousands of worms)
- "Backyard Hodge Podge"
- "Phineas and Ferb Save Summer"
- Where's My Perry? (Agent File)