Gurgi (after the character in the Disney movie "The Black Cauldron")
Gurgle
Gurrumina
Gurt
Guru
Gus
Gusano
Gus-Gus
Guss
Gussie
Gussy
Gustaf
Gustalph Meowler
Gustalph Meowler Von Kittenshitz
Gustav
Gustav Mahler
Gustavus
Guster
Gusto
Gustopher
Gustopher Jones
Gustopher Robin
Gutsy
Guy
Guybrush
Guzo
Gwen
Gwendolyn
Gwenhyvar
Gweniviere