Um Sang-hyum (엄상현; Eom Sang-hyeon) is the Korean voice of Rubble.
Other Roles
- Arthur - Nigel Ratburn (Korean dub)
- Avatar: The Last Airbender - Sokka (Korean dub)
- The Ben 10 franchise - Teenage Kevin (Korean dub)
- Blue's Clues - Steve (Korean dub)
- Fireman Sam - Norman Price (Korean dub)
- Noonbory and the Super 7 - Pongdybory
- Ouran High School Host Club - Hikaru Hitachiin (Korean dub)
- Regular Show - Muscle Man/Pops (Korean dub)
- Sonic X - Sonic the Hedgehog (Korean dub)
- SpongeBob SquarePants - Barnacle Boy/DoodleBob (Korean dub)
- Tayo the Little Bus - Rogi
- The Teenage Mutant Ninja Turtles franchise (2007 film - 2012 series) - Michelangelo (Korean dub)
- The Fairly OddParents! - Additional voices (Korean dub)
- The Penguins of Madagascar - Mort (Korean dub)
- VeggieTales - Bob (Korean dub)