As far as superheavyweights go, the following were/are some of the good ones:
Big Show/The Giant (he moved way better than a man his size ever should've and could put on a match with anybody. He could convincingly wrestle Rey Mysterio or Kane with no problem. He was slow towards the end of his WWE career, but that was due to being the biggest he'd ever been.)
Bam Bam Bigelow (probably the best SHW ever. Wrestled everywhere. And for whoever said that he didn't have any memorable matches, apparently you never saw Bam Bam in ECW.)
Umaga (initially I was against Umaga, but he's a constant performer. Gives his all in the match and has incredible speed and agility.)
Big Van Vader (and I do mean the WCW version. Once he left for WWF and became Shawn Michael's bitch, he was not the monster he once was.)
King Kong Bundy (he was a classic. Not technically sound, but also not unathletic.)
The following are some who are decent enough, but should never be pushed as main eventers:
Big Daddy V/Viscera (Vis is athletic. If you actually watched his pre-ECW matches, you'd know that. Now they've just got him pounding on people, so it doesn't come through.)
Mark Henry (He was great in the Nation of Domination. That was where he belonged. He's not a singles competitor. He should always be the muscleman of a stable or tag team. Too bad WWE hates stables and tag teams, which is why nobody should get excited about a new Hart Foundation. It won't last)
Yokozuna (one half of one of the best tag teams ever, with Owen Hart. But just boring as a main eventer)
The following are those who should've never stepped into a ring. Ever:
The Great Khali (honestly, does it need to be said. He can't wrestle. He's slow. He can't even cut a promo himself. Fans hate him, and not in the way that the WWE wants. Just a waste, and a blemish on the world title history.)
Giant Gonzalez/El Gigante (basically, he was the Great Khali of the 90's. Just all around terrible.)
Loch Ness (the less said about Loch Ness, the better)
The following are people I don't classify as superheavyweights. They may meet size requirements, but when it comes to characters and personas, they just don't strike that fear into people that is supposed to be associated with SHW. Basically, my qualification for this is, are they somebody that it would require 5 or 6 guys to toss them in a Royal Rumble? These are not:
Kane (sure his name is the Big Red Monster, but he's somebody that can wrestle anybody.)
Kevin Nash (he was just a tall Triple H. But a more entertaining one too.)
Undertaker (great worker, sure, but people are afraid of his dead gimmick, not his size)
There are more, but these are the ones people remember. Super heavyweights are good for the business, but when used right. WWE just doesn't know what they're doing often times though. Some SHW are main eventers, others are just enhancement wrestlers. That's fine if they mess that up. They just need to stop signing people who are huge but have no redeemable qualities in the ring.
Big Show/The Giant (he moved way better than a man his size ever should've and could put on a match with anybody. He could convincingly wrestle Rey Mysterio or Kane with no problem. He was slow towards the end of his WWE career, but that was due to being the biggest he'd ever been.)
Bam Bam Bigelow (probably the best SHW ever. Wrestled everywhere. And for whoever said that he didn't have any memorable matches, apparently you never saw Bam Bam in ECW.)
Umaga (initially I was against Umaga, but he's a constant performer. Gives his all in the match and has incredible speed and agility.)
Big Van Vader (and I do mean the WCW version. Once he left for WWF and became Shawn Michael's bitch, he was not the monster he once was.)
King Kong Bundy (he was a classic. Not technically sound, but also not unathletic.)
The following are some who are decent enough, but should never be pushed as main eventers:
Big Daddy V/Viscera (Vis is athletic. If you actually watched his pre-ECW matches, you'd know that. Now they've just got him pounding on people, so it doesn't come through.)
Mark Henry (He was great in the Nation of Domination. That was where he belonged. He's not a singles competitor. He should always be the muscleman of a stable or tag team. Too bad WWE hates stables and tag teams, which is why nobody should get excited about a new Hart Foundation. It won't last)
Yokozuna (one half of one of the best tag teams ever, with Owen Hart. But just boring as a main eventer)
The following are those who should've never stepped into a ring. Ever:
The Great Khali (honestly, does it need to be said. He can't wrestle. He's slow. He can't even cut a promo himself. Fans hate him, and not in the way that the WWE wants. Just a waste, and a blemish on the world title history.)
Giant Gonzalez/El Gigante (basically, he was the Great Khali of the 90's. Just all around terrible.)
Loch Ness (the less said about Loch Ness, the better)
The following are people I don't classify as superheavyweights. They may meet size requirements, but when it comes to characters and personas, they just don't strike that fear into people that is supposed to be associated with SHW. Basically, my qualification for this is, are they somebody that it would require 5 or 6 guys to toss them in a Royal Rumble? These are not:
Kane (sure his name is the Big Red Monster, but he's somebody that can wrestle anybody.)
Kevin Nash (he was just a tall Triple H. But a more entertaining one too.)
Undertaker (great worker, sure, but people are afraid of his dead gimmick, not his size)
There are more, but these are the ones people remember. Super heavyweights are good for the business, but when used right. WWE just doesn't know what they're doing often times though. Some SHW are main eventers, others are just enhancement wrestlers. That's fine if they mess that up. They just need to stop signing people who are huge but have no redeemable qualities in the ring.