The Sinister Six are a group of 6 villains led by The Underminer. Syndrome was originally meant to lead, but due to his defeat in the Battle For Metroville and his incarceration within the Ravencroft Institute, Underminer continued where Syndrome left off, leading his fellow Villains in a 6-man war on the MAVERICK Heroes, while also following his original plans of human extinction.


David Flynn/The Underminer
Harry Osborn/The Green Goblin
Alexi Sytsevich/The Rhino
Quentin Beck/Mysterio
Otto Octavius/Dr. Octopus
Adrian Tombes/The Vulture


Gustav Fiers/The Gentleman
Buddy Pine/Syndrome

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