The way to make the ultimate character is as follows. It seems weird at first but keep reading and the point will emerge.
1 Reduce your strength, constitution, desterity and every characteristic, figured or otherwise, aside from body to zero, and reduce your body to one. Do the same with your starting movement and everyman skills. This produces a large number of points.
2 Give yourself appropriate disadvantages: as many as you are allowed.
[ You may be wondering whats so good about a character that cannot move or think. Bear with me and the full genius will become apparent.]
3 Buy the area of effect advantage on your body.
4 Spend the remainder of your points buying the increased area advantage on your body.
5 Calculate the volume of your body. As the costs of 3 and 4 are minute, your 1 point of body only costs 2 points, this will be very large indeed. I calculate the diameter of one character as billions of light years.
6 Start the campaign.
7 Your character will take up an area far greater than your game world, solar system, galaxy and likely the universe. Since you start on your game world, or more correctly it starts inside you, you will destroy it.
A character that destroys the game world, solar system et al w/o trying has got to be the most powerful there is.