Dr. Greer works in an unnamed hospital in Chicago, and has noticed in recent months that many homeless veterans are showing up with strange mental issues. He is concerned, yet doesn’t know where to turn until the Renegade Joes show up on his doorstep.
He helps nurse Tunnel Rat back to health, and is there when the Joes return with other veterans who have been rescued from the clutches of MARS Industries. When music is revealed as the cure to this mental ailment, Dr. Greer helps the Joes escape and does not reveal to Flint their location or what happened at the hospital.
Voice Actor: Phil LaMarr
- Episode 3 – Rage – First appearance, and introduction to the character.