Koichi Yamadera, also known as Bazooka Yamadera, is a Japanese actor, singer, radio personality and narrator.

Yamadera, as of 2019, is the current Japanese voice for Donald Duck, taking the role after Tokio Seki, with his earliest known role as Donald being in Pop'n Music Disney Tunes in 2000. His first major appearance as Donald Duck was in Kingdom Hearts.

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