Akio Otsuka was 28 in Shuten Doji - The Star Hand Kid when he played the character 'Iron Kaiser (voice)'.
That was over 35 years ago in 1989.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 64, and has starred in 136 movies in total, 135 of those since Shuten Doji - The Star Hand Kid was released.
In Shuten Doji - The Star Hand Kid, I think Akio Otsuka looks: