"Possibly Danville"@en . "Agent D"@en . . . . "\"It's About Time!\""@en . "Agent D with his weapon."@en . . "Boss"@en . "Agent D first appeared in \"It's About Time!\". His real name is unknown, although he is referred to as Dana the Duck by Doofenshmirtz in Where's My Perry."@en . . "main nemesis unknown"@en . "L.O.V.E.M.U.F.F.I.N."@en . . . "More than 5"@en . . "Agent D first appeared in \"It's About Time!\". His real name is unknown, although he is referred to as Dana the Duck by Doofenshmirtz in Where's My Perry."@en . . "Animal"@en . "Less than Perry"@en . . "American"@en . . . . . "Other members of the O.W.C.A. and Carl"@en . "\"The Klimpaloon Ultimatum\""@en . "Secret Agent"@en . . . "Male"@en . "Agent D (duck)"@en .