Gumbus McGoo is a character role-played by GumbyMMA.
Upon his arrival to the city he was quickly adopted by Whitley Booth & Harry Phartz. Gumbus was picked up from the hospital by Whitley, when "abduction" turned into "adoption". Later on it was discussed between Whitley & Harry, that Harry would be the step mom to Gumbus.
There is much confusion through the city on how Mike Bayo became Gumbus' step father. However when questioned about it Bayo refuses to answer; even few members of law enforcement are aware of the situation.