Agent 10 is an American animated television series created by Dan Povenmire and Jeff "Swampy" Marsh for Disney Channel.
The series takes place before before Doofenshmirtz joins O.W.C.A. It follows Ten Beaver (Eric Bauza) and his sidekick and partner Gibbel the Squirrel (also Bauza) to fight crime from the evil villains from Phineas and Ferb.
Ten Beaver (voiced by Eric Bauza, singing voice by Jeremy Jordan) is the main protagonist of the series. He is a smart, crime-fighting, and strong beaver who has no owner but can be any replacement for any O.W.C.A. Agent. His name Ten was actually his middle name, it is unknown what his first name is.
Gibbel the Squirrel (voiced by Eric Bauza) is Ten's sidekick and partner. He is a cute and cowardly squrriel who sometimes makes peanut butter and jelly sandwich when he's nervous.
Dr. Heinz Doofenshmirtz (voiced by Dan Povenmire) is the main antagonist of the series. He is an evil pharmacist who had an unhappy childhood and wants always revenge from it. Every inator gets destroyed all the time from Agent P or Agent 10.
Major Monogram (voiced by Jeff "Swampy" Marsh) is the chief and leader of O.W.C.A. He is an old but intelligent man who tells the O.W.C.A. Agents to go on there missions and if the agent is not gonna fight the villains today, Ten takes there place.
Aloyse von Roddenstein (voiced by Joe Orrantia) is a member of L.O.V.E.M.U.F.F.I.N., whose most notable physical trait is his baldness. He prefers to be addressed by his full name, and his clothing is a white lab coat with two gray/white shoulder epaulettes.
Norm (voiced by John Viener) is an over-sized humanoid robot that Heinz Doofenshmirtz originally created to try to destroy Perry the Platypus and Agent 10; he has since become Doof's assistant.
Dr. Diminutive (voiced by Dee Bradley Baker) is an evil scientist and a member of L.O.V.E.M.U.F.F.I.N. This mad scientist has lost all hair except around the temples and wears glasses. He is named for his short stature, and due to that, makes him the shortest member in L.O.V.E.M.U.F.F.I.N.
Professor Esmeralda Poofenplotz (voiced by Amanda Plummer) is a local mad scientist and the nemesis of Agent Pinky and Agent 10.
- Eric Bauza provide the voice of Ten and Gibbel, who also voiced the titular character of The Adventures of Puss in Boots and Joey and AP in Atomic Puppet.
- Jeremy Jordan provides the singing voice of Ten, who also voiced Varian in another Disney Channel series, Tangled: The Series
- Povenmire and Marsh reprise the voices of Doofenshmirtz and Monogram.
- even Orrantia, Viener, Baker, and Plummer reprise there roles