Igor Sladek

World-famous classical pianist who's actually a secret agent for the World Intelligence Network, in the "International Concerto" episode (November 17 1968) of British sci-fi televisions series Joe 90. Unfortunately, during his concert tour of Eastern Europe, his cover's been compromised. The title character works to help smuggle him out back to the West.

The music he plays was composed by Barry Gray.

Voiced by Keith Alexander.