Mark Ryan (June 7, 1956- ) a multi-taltented British actor, singer, writer and director. He is perhaps best known for originated "Nasir" for the cult British TV series: Robin Of Sherwood. Ryan also toured the US with original Monty Python member Eric Idle, performing at Carnegie Hall and the Hollywood Bowl. He began working on Transformers during filming as the on-set voice of several different robots. This work continued throughout filming and into editing, prior to the actual casting of voice-over talent. He was then cast as the voice of Bumblebee during post-production.