Professor Sakunji is another commander of Big Falcon.

Spoiler

After Hamaguchi's death, Sakunji, a former student of Hamaguchi, is called upon to take over command of Big Falcon. He is a hard-nosed commander who continually pushes the Voltes V Team to their limits during training, sometimes to the point of risking their lives.

Voiced in the original by Tamio Ouki, who also played General Miwa in Daimos and Captain Tashiro in Gunbuster. Although he first appeared cruel, he has also shown his soft side as the series went through, especially that he was concerned about the people of the Earth more than anything else. (Source: Wikipedia)