In
FusionFall, Mandark runs
Mandark Industries, a rival firm of
Dexlabs.
In the manga, Mandark confronts an infiltration team consisting of
Numbuh 5,
Mac,
Bloo, and
Dee Dee.
The group demands his Pase-Pulse-O-Tron needed to complete the
Electro-Pulse Cannon. Though initially defiant, his infatuation with
Dee Dee
led him to easily and willingly hand it over on the condition that he
came along. Together with a reluctant Dexter, they program the EPC to
disable the biggest of the first three Terrafusers that landed on Earth.
However, Mandark's love for Dee Dee also distracted him, leading to a
fatal error that prevented the cannon from launching at a crucial
moment.
In the
Future, he could be found by the Infected Zone in
Peach Creek Estates. He helps the player rebuild Dexter's time machine so he/she can return the Past.
In the Past, Mandark can be found in front of his company building in
Tech Square. He no longer uses his old lab now that his old house in
Genius Grove has fallen victim to the
Fusion invasion and has been turned into an Infected Zone. Though he is against
Fuse's
invasion, his rivalry with Dexter often leads him to undermine his
nemesis' attempts to turn the tides of the war to gain glory for
himself.
Mandark's love of Dee Dee also caused him to be manipulated by
her evil doppelganger, Fusion Dee Dee, making him steal Dexter's wrench
(which Fuse uses to make a Fusion Dexter). Through the efforts of the
original Dee Dee, and her Imaginary Friend, Koosy, Fusion Dee Dee was
defeated and Mandark realized his mistake.
Aside from Dexter, Mandark doesn't get along very well with
Mojo Jojo or
Vilgax,
as he believes that both of them are trying to steal his company's
secrets. Fusion Ben was able to exploit this fact in order to cause the
three to come together in a battle royal in the
Skypad Space Port Infected Zone. Fortunately, the battle was quelled thanks to the original Ben and the three villains returned to being bitter enemies.
During the mission to face Fusion Mandark for the Mandark Nano, Fusion Mandark took control of some of his
Mandroids
and sent them to attack the player in his lair. The player successfully
destroys all of them, though not without upsetting Mandark, and defeats
the Fusion.
When Planetoid Fusion broke off from
Planet Fusion
and headed for Earth, Dexter asked Mandark for a part for an Ion cannon
he was building to shoot the planetoid down. What Dexter didn't know
was that Mandark had sabotaged the part to render the Ion cannon
useless, leaving his new weapon in the
Really Twisted Forest
alone to defend the Earth. Using a missile array borrowed from Vilgax,
Mandark fine-tuned his weapon for its mission. Ironically, Vilgax had
tampered with both Dexter's and Mandark's cannons so that they would hit
Planet Fusion instead of it's planetoid. The planetoid itself was
destroyed by
Courage when he reversed the polarities on a UFO magnet in
Nowhere that tore the planetoid from its foundation, thus crushing it and leaving Mandark humiliated.
To further exploit Fuse's weakness to Imaginary Energy, Mandark has enlisted
Bloo and
Mac
to participate in a study that requires the best Kid/Imaginary Friend
pair there is. He is currently building a research center called the
Imaginasium near
Foster's Home to initiate the research project. The construction is being overseen by
Frankie,
who constantly gets into quarrels with Mandark Industries
Representatives, and even Mandark himself, about the structure's
display.
Among all the characters from
Dexter's Laboratory, Mandark is the only one being mocked as the designers say that he's still hasn't matured since his wardrobe hasn't updated.
