Wonderman

Wonderman is a 1979 Finnish science fiction horror comedy film directed by Antti Peippo and starring Antti Litja, Martti Pennanen and Saara Pakkasvirta. It tells story about the data-expert that proposes, after his brain capacity has been developed in the special rationalization program, the serious measures that will save the company from an economic collapse, but when his drastic savings programs forces the board to resign, he must go underground.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.