Drivers of Megakat City subway trains. A subway motorman who was driving the fateful subway train. When he noticed a bacteria monster blocking the tracks, he tried to avert disaster by hitting the brakes. However the monster attacked and devoured the train anyway, killing the driver and all of his passengers.
In the unfinished episode The Doctors of Doom, Dr. Viper’s mutant grub worms would’ve tunneled through the subway to get to the Megakat Thermonuclear Plant, attacking a train in the process. One of them would’ve spit acid at the driver’s window. It is unknown if this would’ve killed him or not.