OPOSSUMS ARE MARSUPIALS. If you open just about any field guide to North American mammals, the opossum will probably be the very first of the 380 or so mammal species described. That's because opossums are our only marsupial, and marsupials are considered very ancient forms of mammals.
operator - an agent that operates some apparatus or machine; the operator of the switchboard. manipulator. causal agency, causal agent, cause - any entity that produces an effect or is responsible for events or results. company operator - an operator who works for a company. driver - the operator of a motor vehicle.
Comments155 Share. The Operator is a character in the MarbleHornets ARG and a major focus of the story. Unlike many other ARG's, he is the major antagonist, whereas in most ARG's the main antagonist is someone Slender Man's working through.