My pick of the top 10 villains from the Dragon Ball Z universe. I chose Frieza, Cell, and Kid Buu since they were the main villains from the series. I also chose Baby and Syn/Omega Shenron since Baby was the main villain from GT and Syn/Omega was the strongest of enemies.
For the other five villains, I was already set on choosing Cooler, Broly, Janemba, and Hirudegarn, but I was debating a long time between Hatchiyack, Bojack, King Piccolo, and Super 17. I decided to exclude Super 17 because he was the shortest series villain, and King Piccolo because, though he was the main villain in Dragon Ball, he's really small time in the grand scheme of things. So I debated between Bojack and Hatchiyack, but decided on the latter due to how interesting he was, and because of the history the Tuffles and the Saiyans share.
I neglected choosing Vegeta and Beerus as villains because Vegeta becomes a good guy and Beerus, though he's the God of Destruction, isn't technically evil.
By the way, out of all the DBZ movies, I'd like to give the most props to Wrath of the Dragon. Though the first Broly movie was my favorite, Wrath of the Dragon just had a feel to it that made it seem like a real movie, even more so than Battle of the Gods.