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Nobody talks to the boss about this.
~ Dennis about the heroes escaping after eating several Pistachion sprouts.

Dennis is the secondary antagonist of the Milo Murphy's Law episode "Fungus Among Us", and the hour-long special "The Phineas and Ferb Effect". He is a Pistachion who serves Derek.

He was voiced by Jim Ward.

Biography[]

Fungus Among Us[]

Dennis, along with his fellow Pistachions, were created by Derek following the latter's travel to the year 1955. Determined to avenge his deceased father King Pistachion, Derek formulated a plot of changing the timeline, allowing the Pistachions to take over the world in the present, rounding up all humans.

Dennis was first seen spotting Milo Murphy, Orton Mahlson, Balthazar Cavendish, Vinnie Dakota and Diogee, so he orders several of his Pistachions to catch them. The heroes forced to lock themselves up in a disposal room. Dennis sends in several Pistachio sprouts to break inside the room and kill the heroes, but Dakota just grabs the sprouts and eats them up, much to Dennis' anger. This provoked an angry Dennis to break down the door, but the heroes made it to the sewers, where they used a boat to escape. Upon witnessing the heroes escape, Dennis tells his fellow Pistachions not to disclose the incident to Derek, but one of them informs that Derek has made a call and wants to talk to Dennis, much to the latter's frustration.

The Phineas and Ferb Effect[]

Dennis was seen as he managed to capture Milo and his friends (as well as Phineas and Ferb). He also informed them that he and his fellow Pistachions don't replace people with plant replicas anymore, and that they actually intend to turn them all into new Pistachions with the use of Derek's new machine called M.U.L.C.H.T.P. (Machine Used for Literally Converting Humans To Plants, though the last two letters are silent as Derek claimed) to take over the entire world, even using it to turn all of the main characters' families and friends into Pistachions.

Fortunately for the heroes, the former evil scientist named Heinz Doofenshmirtz managed to build a time machine to sent Orton back to 1955, where they destroyed Derek with orange soda. This event is what erased Derek and the Pistachions from existence, and it can be implied that Dennis himself is erased from existence as well.

Navigation[]

           MiloMurphyLawTitle Villains

Pistachions
King Pistachion | Jerry | Brandy | Derek | Dennis | Giant Pistachion

Octalians
Octalian Commander | Octalian Pilot | Loab & Khone | Beek | Mantel | Dorsal | Robot Milo

Doofenshmirtz Evil Inc.
Heinz Doofenshmirtz | Norm | Vanessa Doofenshmirtz | Turn-Inanimate-Objects-Evil-Inator

V-tech Corp Inc.
Victor Verliezer | V-tech Handlers

Government Agents
Colonel Niblet | Lieutenant Tennant | Cyborg Bear

Fictional Characters
Trashcandroids | The Menninkäinen

Other
Agents Brick & Savannah | Dr. Not Sorry | Zippy the Koala | Igor & Vlad

           Phineas&FerbLogo Villains

Doofenshmirtz Evil Inc.
Heinz Doofenshmirtz | Norm | Vanessa Doofenshmirtz | Gelatin Monster | Balloony | Evil Platypus Clones (Jerry the Platypus) | Doofenshmirtz's Mecha | Alien-inator | Rodrigo | Mindless Repulsive Pharmacists

L.O.V.E.M.U.F.F.I.N.
Aloyse von Roddenstein | Dr. Bloodpudding | Dr. Diminutive | Charlie Bainbridge | Orville Von Roddenstein | TV Scientist | David Bringdown | Bannister Evil Enterprises (Professor Bannister, Bannister's Thugs, Me-Positive & Me-Negative) | Chloe | Dr. Killbot | Warehouse Goons

Doofenshmirtz Evil Inc.-2
Doofenshmirtz Family-2 (Heinz Doofenshmirtz-2, Charlene Doofenshmirtz-2 & Vanessa Doofenshmirtz-2) | Norm Bots | Goozim | Animal-Borgs (Perry the Platyborg, Peter the Pandaborg, Pinky the Chihuahuaborg & Terry the Turtleborg) | Giant Mechanical Ants | Tony Marzulo

O.W.C.A.
Dennis the Rabbit | Evil Carl Karl | Evil O.W.C.A. Robots (Evil Flynn-Fletcher Robots)

Extraterrestrial Beings
Mitch | Zachariah Yore | Morg | Super Super Big Doctor | Braxington-ton | Hermellivue | Stapler-Fist | Shoe-Monkey | Toilet Flower | Sand Blaster | Mama

Crossovers
Red Skull | MODOK | Whiplash | Venom | Darthenshmirtz | Stormtrooper Candace | Candace's C.O. | Norm-3PO | Stormtrooper Baljeet | Stormtrooper Buford | Darth Ferb | Pistachions (Derek, Dennis, Giant Pistachion & King Pistachion)

Time Shift
Jekyll Doofenshmirtz | Doofengung | Mongol Army (Doofus Khan) | Doofenshmirtz (1914) | Corn Colossus of Juatchadoon | Norm (1914) | Doofenshmirtz Evil Amalgamated (Professor Von Doofenshmirtz & Pneumatic Pnorman)

Fictional Characters
Torbo | Control Freak | Smile Away Reformatory School (Drill Sergeant) | Morty Williams | Giant Buford | Shape Shifter | Ninja Vampires | Doofenwarlock | Spider-Monkey | Doofenwarlock Guards | Flying Squirrels | Little Witch Suzy | Jared | Malifishmertz Evil Tradesman Association (Malifishmertz, Meatlings, Lawn Gnorme & Shepherd Spy) | Keeper of the Bridge of Comprehension | Candace's Id | Worthington Dubois | Inner Doofenshmirtz | Professor Nibbles

Other
Mr. and Mrs. Doofenshmirtz | Brobots | Suzy Johnson | Dr. Feelbetter | Lloyd Wexler | Professor Destructicon | Dr. Gevaarlijk | Esmeralda Poofenplotz | The Regurgitator | Biker | Khaka Peü Peü | Busting Candace | Tower | Potato Gremlins | Liam McCracken | Peggy McGee | Random Swimwear (Mittington Random & Klimpalooners) | Professor Mystery | Professor Parenthesis | Mecha-Fleas

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