Dragon Ball: I Became Dr. Gero in the Beginning?

There is no female protagonist, no Madonna, and the male protagonist is Dr. Gero. At the beginning, Dr. Gero traveled through time and became an old man. With the help of Robert, the original Android 1, he used Son Gohan's S cells and fusion agent to make him a Saiyan and conquered Raditz Son Gohan. Later, he used his powerful technological capabilities to integrate the abilities of various strange aliens to assist his own Saiyan transformation, replacing Frieza and becoming the emperor of the universe.