Yuji Okumoto was 25 in Real Genius when he played the character 'Fenton'.
That was over 39 years ago in 1985.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 65, and has starred in 43 movies in total, 42 of those since Real Genius was released.
In Real Genius, I think Yuji Okumoto looks: