Veteran Japanese anime voice actor Mikio Terashima was born on September 3, 1931. Mikio Terashima provided voices for many anime properties. He started his anime voice acting career in the 1960s, and continued voice acting in the 1970s, the 1980s, and the 1990s. Terashima also provided some anime voices in the 21st century. However, Terashima's best-known anime voice acting work comes from the 1970s and 1980s.

In the 1970s, Mikio Terashima provided the voice of Berge Katze in the various Gatchaman properties. He was also the voice of Emperor Zu Zanbaziru in Choudenji Machine Voltes V, and he provided the voice for a West German delegate in Lupin III: Castle of Cagliostro. In the late 1970s and early 1980s, Mikio Terashima provided the voice of Sho Yamazaki in Space Battleship Yamato. Sho Yamazaki was the second engineer for the Yamato; he became the engineer after the original engineer, Aiko Tokugawa, died in Farewell to Space Battleship Yamato: In the Name of Love. Sho appeared in Space Battleship Yamato: The New Voyage, Be Forever Yamato, Final Yamato, and the third Space Battleship Yamato television series.

Mikio Terashima also provided several anime voices in the 1980s. His credits during this era include Dr. Ben in Ekkusu bonba, Bentsel in Arcadia of My Youth: Infinite Orbit SSX, Fujibayashi Genjuro in Dagger of Kamui, Ryoko's father in Area 88: The Blue Skies of Betrayal, and Elgarno in Crusher Joe. Mikio Terashima also provided voices for Outlanders and Dirty Pair. Mikio Terashima’s main voice acting credits in the 1990s are Leslie Arno in Mobile Suit Gundam and Ojisan in Yokohama kaidahi kiko. He has also provided voices for The Big O and Turn A Gundam.

While Mikio Terashima had some anime roles in the 1960s, he was better known in that time for the roles he had in several Japanese live-action films during that era. Terashima made appearances in the following 1960s Japanese live-action films: Nihon no Yoru to Kiri, Kabe no Naka no Himeoto, Joyoku no kuro suisen, Hinin kakumei, Shiro no jinzô bijo, Hikisakareta joji, Akai hanko, Aku no modae, Gyakujo, Joji no rirekisho, Furin no tsugunai, Oiroke sakusen, and Matsukawa-Jiken.

Sadly, Mikio Terashima passed away on December 4, 2008 at 4:05 p.m. Terashima died in a hospital in Tokorozawa, Japan. He was 77 years old at the time of his death. Mikio Terashima was also married to a woman named Yasuko Terashima.