Doctor Octopus
In a lead-up to "Sinister War", Kindred told Doctor Octopus that he can help him with his memories, but he will need to gather five more people. At an unknown beach, Doctor Octopus helped Sandman with his loss of direction and promised to solve Sandman's immortality problem. Upon building a special machine, Doctor Octopus resurrects Electro with his powers intact as Kindred comments on Electro's abilities while stating that Doctor Octopus is getting closer to his true self. Doctor Octopus and Electro find Kraven the Hunter in the Savage Land hunting a dinosaur. When Electro shocks the dinosaur, Doctor Octopus recruited Kraven the Hunter into the Sinister Six by promising him to hunt down the Lizard. Doctor Octopus coerced Curt Connors into using the Isotope Genome Accelerator on himself which separates him from his Lizard side. Kindred then completed the Sinister Six by having Mysterio join him as Kindred notes that his endgame with Spider-Man is approaching.