Robert Martin Klein (also credited as R. Martin Klein and Bob Marx) is a voice actor whose works include Cyborg 009, Digimon: Digital Monsters, Mon Colle Knights and Zatch Bell!.
He was the English voice of Gaku Manabe in FLCL.
Anime[]
- Battle B-Daman as The Big Cheese; Additional Voices
- Blue Dragon as Marumaro
- Code Geass as Lt. Colonel Kusakabe
- Cyborg 009 as Ivan Whisky/Cyborg 001
- Digimon: Digital Monsters as Gomamon/Ikkakumon (Adventure-Adventure 02); Toshiaki Mori (Tamers); Additional Voices
- Eagle Riders as Mallanox
- El Hazard - Katsuhiko Jinnai
- Flint the Time Detective as Flint Hammerhead
- Gatchaman as Solaris
- Hand Maid May as Kotaro Nanbara
- Hyper Doll as Kurageman
- Magical Meow Meow Taruto as Kakipi
- MÄR as Pozan
- Mirmo! as Kororo
- Mobile Suit Gundam: The 08th MS Team as Jidan Nickard
- Mon Colle Knights as Impy; Additional Voices
- Noein as Fukurou
- Perfect Blue as Me-Mania
- Zatch Bell! as Grisor