Chikao Ōtsuka

Chikao Ōtsuka (大塚 周夫) was a veteran seiyū. Ōtsuka, from 2006 until his death, was represented by Aoni Production. He is most noteworthy for providing the Japanese voice of Dr. Eggman since Sonic Adventure up until his death.

Voice acting

 * Sonic the Hedgehog series:
 * Dr. Eggman (1998-2015)
 * Gerald Robotnik (2001-2015)
 * Dr. Eggman Nega (2005-2015)
 * Sonic X:
 * Dr. Eggman
 * Gerald Robotnik
 * Sonic Boom:
 * Dr. Eggman (Sonic Boom: Rise of Lyric)