My favorite is Super Buu (Gohan Absorbed) He was crazy strong but then Vegito steps in like a boss to defeat him ,Just imagine if vegito was really absorbed by buu

Mine would have to be kid buu, he may be extremely evi,l but he never goes out without giving any comedy in there. He was one of the funniest villains I have come across. And I would have cell as second place. At time kid buu was fighting I would say is he even serious? Look at him playing! Then most of the time he would destroy.

I think my favorite was Cell. I found the storyline for him getting from Trunks traveling through time to warn about the androids to the final fight with Gohan to be the most interesting.

I did like Frieza but it felt like he should have been able to wipe every out a long time before his fight with Goku. He wasn't nearly as evil and ruthless as he was made out to be.

*Spoilers for anyone who hasn't seen this movie but really who hasn't seen this movie* Broly because he may not have been the strongest but he was the most ruthless, now I know what you're thinking, he didn't kill any of them so how can he be so ruthless? Well if you've seen the first movie like I have, it's my favorite movie, he almost killed Gohan before Piccolo stopped him. Must have been a weak blast by Broly or a blast of desperation by Piccolo. As shown by the movie, if Broly had given it his all, Gohan would be dead and Broly would be unstoppable. Because it was only with all the heroes' energy was Goku able to stop Broly. He still wouldn't have killed any of the others yet. He would have toyed around with them, knowing there was no way for any of them to beat him and without Gohan, there really would be no way to beat Broly. I'm not overrating Broly so don't think I'm a Brolytard. I'm just going off everything in the movie. It was not until he was supplied with Gohan's, Trunks', Piccolo's, and a little bit of Vegeta's adding to his own power to even catch Broly's fist and it took the rest of Vegeta's energy adding to all that power that allowed him to defeat Broly in that one punch. Plus all the sweet lines Broly made while kicking their asses, I mean how can he not be my favorite villain? He's not only the Legendary Super Saiyan but he's the legendary villain. Except in Broly: Second Coming, that sucked.

My favorite villain would have to be Cell. I always loved his abilities and personality. Just the fact he set up the Cell Games was such an awesome thing for a villain to do. Plus the fact he could absorb the androids to beef himself up was really cool. And I loved how he could spawn a bunch of little minions to do his bidding. The fact he got blown up and a single cell survived and he regenerated from it was also awesome. Cell is by far my favorite villain.

My pick would be Broly. There have many other villains that the Z gang had encountered, that they were clearly being overpowered. But none so much as Broly. The entire movie is just them getting dominated, and Broly smiling the while time (Well, when he goes Legendary Super Saiyan.) I love how Goku charges up his Kamehameha and fires it at Broly, and even though Broly could have blocked, or dodged, just took it head (Or chest) on, and smiled. So badass. And the casual evilness he has, sending that energy blast toward those little alien guys, and we're all thinking, "No! Someone save them! Broly is a bad man!" Only for him to curve the energy blast around and blow up their home planet in front of them, and laugh... That's some evil junk there, man...

Then the cheap shot into Broly... The entire fight was Broly beating down the Z gang, with ease. Then, Goku punches him once... I think the creators realized that they made Broly too powerful, and had to end the movie somehow...

And in the second movie, I loved how he was clearing holding back, and playing around with Goten and Trunks... Until Trunks peed all over his face... Then, the rage came back, and he wasn't playing anymore. XD

Hell, other than that cheap shot that ended the first movie, Videl, in the second movie, did more damage to Broly than the entire Z gang. XD

Oh, and even though it's unrelated, the way Krillin saves Gohan in the second movie was the best. XD

Specifically Super Buu as I've explained in another thread, his cold but childish and murderous nature makes him super fun. 

Fat Buu is similar but be doesn't have the cold part completely nailed down, he just wants to have fun, and seems to be somewhat mentally deficient, which honestly that's never had a very good explanation.