Otto Octavius, also known as Doctor Octopus and the Master Planner, is one of the secondary antagonists (alongside Hammerhead, Venom, and Rhino) of the animated TV series The Spectacular Spider-Man.
He is a scientist who worked at OsCorp for Norman Osborn. After having his tentacles fused to his back, he turned to supervillainy as Doctor Octopus, terrorizing New York City to become one of Spider-Man's greatest archenemies along with Green Goblin and Venom.
Otto was a timid scientist who was respected and was always willing to apologize unlike his former boss, Norman. He became insane and wrathful when he turned to villainy as Doctor Octopus and Master Planner after having his arms fused to his back, terrorizing New York City to become one of Spider-Man's greatest opponents along with Venom and Green Goblin.
Otto Octavius was a respected nuclear physicist, atomic research consultant, scientist, and inventor working under Norman Osborn at OsCorp. He is very timid and willing to apologize for every little thing, a direct contrast to his boss Norman.
In Season 1, he is one of OsCorp's most intelligent scientists and designed a set of highly advanced mechanical arms controlled via a brain–computer interface to assist him to do dangerous experiments, playing a part in the creation of Sandman and Rhino. Eventually, as the result of a devastating accidental radiation explosion caused by the Green Goblin, his arms became permanently fused to his back and became insane, becoming the vengeful Dr. Octopus. He has telepathic control of these arms and they are strong enough to physically hurt Spider-Man when Octavius controls them.
After his first defeat to Spidey, Ock went to prison, but with the help of Electro, he escaped, along with several other former mega-villains, including Sandman, Rhino, Vulture, Shocker and the rest of the Enforcers. Together they formed the Sinister Six, and, with Ock as their leader, battled Spider-Man, brutalizing him in their first battle, but losing to his new black suit in the second.
In Season 2, Doc Ock and Electro were sent to Ravencroft, a mental therapy institution, and while there, were approached by Kraven the Hunter who offered to break them out in order to reform the Sinister Six under the mysterious Master Planner. Electro went willingly, but Otto, who was seemingly repentant of his evil ways, refused to go. After the new Six was defeated yet again, Octavius's tentacles broke into Ravencroft and pulled him away, screaming.
It was later revealed that Otto himself was the Master Planner, and had pretended to be reformed so as to be undercover. He and his cronies, Electro, Vulture, and the Tinkerer, captured Gwen Stacy as motivation to her father George Stacy, Captain of the New York City Police. Ock forced him to grant him access to every computer in New York, then the USA, and then the world, in an effort of global domination of a more subtle kind. But thanks to Spider-Man's interference and Electro's short temper, his underwater lair was destroyed and his plan foiled. He did, however, escape, to return again with another scheme.
This time Doc Ock vied against Tombstone and Silvermane for control of New York's underworld, and he had Rhino and Vulture to help him. In a final brawl between the three crime lords and Spider-Man, Ock was taken out by the wall-crawler and sent back to Ravencroft. Unknown to the crime lords (except Tombstone), it is revealed that the Green Goblin was behind the orchestration the gang war to get rid of the other crime lords to leave himself as the new Big Man of Crime.
Adrian Toomes: I blame you for this! You told me to bring my magnetic-air transport system to OsCorp! Dr. Otto Octavius: I know. Adrian Toomes: You arranged the meeting with Norman Osborn! Dr. Otto Octavius: (stuttering while walking backwards down the stairs) I had the best intentions. Adrian Toomes: He studied my ideas and rejected them and then announces OsCorp flight tech four months later! Dr. Otto Octavius: I... I am sorry Adrian... Norman Osborn: Don't you dare apologize, doctor. OsCorp has nothing to apologize for. Adrian Toomes: (angrily stunned) Nothing to a... Osborn! You stole my work! Norman Osborn: (smugly) That's dangerous talk, Mr. Toomes. Dangerous and unsupportable. Listen you old buzzard, you've been at this for decades without one success to your name. If you never accomplished anything as a young man, who'd believe you created tech flight as an old one? (to his body guards) Boys? show Mr. Toomes out. Adrian Toomes: (to Dr. Octavius while being escorted out) Good news! I don't blame you anymore.
~ Adrian Toomes confronting Norman Osborn and Dr. Otto Octavius for embezzling him of his flight tech.
Just like his comic book counterpart, this version of Doctor Octopus was a very sophisticated villain, politely asking Aunt May and Anna Watson to step aside before he and the Six attacked Spider-Man.
This version of Doctor Octopus is similar to his classic, Ultimate and movie counterparts having the same tentacle harness of the latter, the same origins of the classic 616 version and having worked for OsCorp like the Ultimate version.
So far, this is the only version of Doctor Octopus in other media to use the Master Planner alias.