Rocca
Rocco
Rochester
Rock
Rockafella Skank
Rockefeller
Rocker
Rocket
Rocket Cat
Rocketman
Rockford
Rocko
Rocksteady
Rocky
Rocky And Bullwinkle
Rococo
Rodeo
Rodesia
Rodgers & Hammerstein
Rodman
Rodney
Rodney (after the character in the british sitcom "Only Fools And Horses")
Rodrigo
Roedtop
Rogan
Roger
Roger Crat
Roger the Dodger
Rogue
Rojo