Sean O'Haire, similar to Samoa Joe. Who showed up the other depended on who was the technico that night.
Ultimo Guererro. Maybe not so big by American standards, but compared to his fellow Luchadors, he's massive. His finishing move is a moonsault off the top rope while holding onto the opponent.
The late Mike Awesome. 6ft 7in, nearly 300 pounds, and could fly around the ring like a Luchadore.
Vader. For much of his career, he moved quicker and more gracefully than a guy of 460 has any business doing.
Rob Van Dam, able to do stuff usually reserved for the smaller high flyers, like back somersaults from a standing still position, while weighing close to 250 pounds of muscle.
Not as pronounced as some people on this list, but The Undertaker is pretty spry, compared to other similarly sized (or bigger) wrestlers in the WWE. He's slowed down a bit with age, but can still do some impressive stunts (such as during the epic WrestleMania XXV match against Shawn Michaels). In his earlier days he was known to walk on the ring ropes!
The main reason he slowed down a bit was that shortly after his unmasking, he preformed a number of Tombstone Piledrivers to people on the steel stage and concrete floors backstage, injuring his knees in the process. He's still one of the faster big men in the business, having a very athletic arsenal.
Goldberg is agile enough to do a backflip (which he did against Hugh Morrus), was also a pro football player, so he had explosive speed and power. Could lift The Big Show and Jackhammer him with one arm, and was able to tear a limo's glass with his bare hands, although it cut his flesh.
Bobby Lashley. They called him "Black Lesnar" for a reason; not only is he a physical match for Brock, but he could also match Brock's speed and agility.
Hulk Hogan, back when his hips were still made of bone and his knees were still in good shape (i.e. back before his second WWE run), was fairly light on his feet, capable of pulling off a hurricanrana in his younger days. Not bad for a guy listed anywhere between 6' 6" and 6'8" and 280 to 310 lbs.
This was Warrior's whole shtick. He would run full-pelt to the ring, splatter his opponent in a matter of minutes and rush out again. He was only slightly shorter than Hogan, built like Superman, and no-sold to the point of appearing invincible.
Sheamus is strong enough to knock around Mark Henry, and his berserker fury can give even John Cena trouble. He also uses an awesome slingshot shoulder block, and can do the "skin the cat" trick.
Masato Yoshino from Dragon Gate is a Fragile Speedster minus the fragile. He's the second smallest guy on the roster, but he can press guys his own size over his head, and knock guys much bigger than himself flying across the ring with a dropkick.
AJ Styles, while not as big as the others, is not only lightning fast and agile, but can casually lift and tackle behemoths like Samoa Joe and Abyss, and can stand up and carry someone who is using a jujigatame (crucifix armbar) on him.
The Rock, who is strong enough to use power moves on people like The Big Show yet typically uses a lot of high flying moves and can do a kip-up.
Lance Hoyt, who is 6'9'' yet typically uses a lot of cruiserweight-style moves like the moonsault.
Roman Reigns stands 6'4" and weighs 265 lbs, and was rightfully pushed as the 'powerhouse' of the The Shield. You would expect above average athleticism from a former Division I College football player, but not to effortlessly clear the top rope on a suicide dive like he does.
Kevin Steen/Owens. 6' even and probably about 275. The last guy you'd expect to come over the top rope or perform a moonsault, and yet he does them effortlessly.
Apollo Crews: 6-1, 240, quite strong, and athletic as someone 40 lbs lighter. Ably demonstrated by his finisher which is a military press followed by a standing moonsault.
The women have Charlotte, 5' 10", Charlotte regularly throws her opponents around with ease, putting them in a headscissors and basically suplexing them by rolling backwards. She also once moonsaulted, stuck the landing, and immediately flipped over to backsplash her opponent.
Donovan Dijak, 2015 ROH top prospect. Take your standard light heavyweight or super junior and scale him up until he's well into heavyweight territory at 265 lbs. He's just as likely to attempt a corkscrew plancha as he is a back breaker rack.
Ken Anderson: A 250 pound man capable of performing both a Swanton Bomb and a Rolling Fireman's Carry from the top rope.