B-31 WHO IS THE STRONGEST IN THE ENTIRE SERIES?

This is a highly debatable topic, and at different times in the story, there are different people who are strongest. However, ultimately, I have to say that Goku is the strongest (afterall, he is the hero of the story.. so he has to be), though the true measure of one's power is not only in physical strength, but a factor of many things combined, including luck, and ability to get help from others (and to properly use that help). At the end of the entire series, if you weigh all the different factors of each character, I think we can all agree that Goku is the strongest... Next to Akira Toriyama, of course.