From Dragon Ball Wiki, the ''Dragon Ball'' encyclopedia
The Kanassan Commander appeared when a platoon of Saiyans in their Great Ape forms attacked the planet Kanassa. Sometime prior, the Kanassan Commander had a vision that he and all the rest of his race would die prior to the invasion. He accepted his fate and battled the Saiyans when they finally attacked, even though he knew that the fight would be fruitless. The Kanassan Commander and a few Kanassan soldiers attacked Bardock, only to be killed by Tora's mouth blast.