General question. Does anyone here actually love Mr.Satan?
Because I honestly do.
The reason simply being that he is the gold standard for "loser" characters. He has his flaws, but most of them are played for laughs, his ego and underestimations often lead to him being the go to butt monkey.
And every time he moves to "preserve his image" it's also the brunt of a joke; often with his opponent not really caring one way or the other.
Even aside from his flaws, the fact that he's as helpless when compared to the enormous power of his "foes" is on the ticket as well; often resorting to tricks and bullshittery (gags) to do the best he can, or at least make it look like he's winning.
Despite all of that though, when it really comes down to it he's not only got a heart of gold; but is actually the key element to victory.
Risking his life to bring Android 16's head to Gohan, pacifying the monstrous Majin Buu, and buying time for as well as singlehandedly supplying the most energy for Goku's spirit bomb. Despite all odds and lack of power, he has the heart of a hero.
And that's why he's the champ.