Mini Marvels - Doctor Octopus

Otto Octavius' troubled childhood led to him becoming an introverted and brooding young man despite his incredible intellect giving him a promising future. Becoming a succesful nuclear physicist and engineer, Otto created a harness with tentacle arms to help him with his experiments. But when a lab accident resulted in an explosion that fused the harness to his body he went insane and began a new life of crime.

With his plans regularly foiled by Spiderman, Octavius would recruit a number of other villains into the Sinister Six, a group which would continue to reform over the years to try and put Spiderman down for good.