[THIS TAKES PLACE AFTER “SURVIVING THE DARK SID EOF THE MOON PART 3”]

At the end of the 'Surviving the Dark Side of the Moon! - Part 3', Astrodude tells S.A.R that he was never friends with him and never will be friends with him. S.A.R shows visible shock after astrodude leaves.

Space Astronaut Replacement (abbreviated as S.A.R (alternative spelling: SAR)) is an antagonist in SolarBalls. He is a sentient robot/AI from Earth. He is made to resemble a human. His made from white metal and has color-changing eyes and cheeks depending on his emotions Light Blue (Neutral), Red (Mad or Angry), Green (Happy). S.A.R. may be a parody of A.M. from "I have no mouth and I must scream". Both have a hatred for humanity and dislike humans polluting planets. S.A.R. possibly has the ROTSAR symbol design pattern referenced on him.