From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
King Furry (国王, Kokuō; FUNimation "King Furry"; Literally meaning "Country King") is the king of Planet Earth.
King Furry assumed his position in 733 Age. He was one of the few people who knew that Son Goku was the true hero, rather than Mister Satan.
Though King Furry was a politically important person, he had little significance until Piccolo Daimao attacked King Castle in Central City and temporarily usurped his throne. Later, King Furry wanted to commemorate Goku with a medal for his heroic battle against Piccolo Daimao, however, Goku had left for the Heavenly Realm.
Dragon Ball Z
Cell Games Saga
King Furry appeared during the Cell Games Saga when he recognized Goku as the same boy who had defeated Piccolo Daimao. Later, he was asked if the military forces should attack Future Cell. He declined because he knew that Son Gohan was the only one who could defeat Future Cell.
Kid Buu Saga
King Furry appeared during the Kid Buu Saga when he shared his energy with the rest of Earth to help Goku create a Genki Dama strong enough to defeat Kid Boo.
Dragon Ball GT
King Furry helped spread word of Earth's upcoming destruction due to the Black Star Dragon Balls, although it was never explained how. He appeared in the last few episodes where he was killed with most of the people of Earth when Omega Shen Long attacked. He was later revived by Shen Long.
- It is apparent that Dogs have been the kings of Planet Earth for some time because portraits of past Dog kings are seen behind King Furry in "Dende's Dragon".
- King Furry utters an FDR quote, "The only thing we have to fear is fear itself", in "A New Guardian".