Spider-Man S03E10 - Chapter XII - The Spot

Dr. Jonathon Ohnn was a brilliant scientist who created the Time Dilation Accelerator portal-making machine for Tony Stark, a.k.a. Iron Man. But after Iron Man and Spider-Man defeated Venom and Carnage, when they tried to free Dormammu from another dimension with the machine, he shut down the Accelerator. Ohnn quit and was later approached by the Kingpin who funded Ohnn's research to have him continue the Accelerator project and Ohnn fell in love with his partner, Dr. Silvia Lopez, who wanted to seek greater reward for her efforts. After they completed the machine, Ohnn was accidentally sucked into a portal, where numerous other portals were formed onto him, and he could create and recall the portals. Ohnn called himself the Spot and started stealing money to help fund his project go further.