In ancient astrology, Mars was Scorpio's ruler, which gives us that need for power, control and determination. In modern astrology, quite-opposite Pluto is our ruler, linking us more to the mystical and psychic world.
If you are the type A Scorpio who is more inclined to have a good job, an established relationship and a lot of money saved in the bank, that means you are dominated by Mars.
If you are the type B Scorpio who is more curious about the unknown, the mysteries of life and works to attain a high level of self-awareness, it means you are dominated by Pluto.
Or maybe, you are dominated by both?