The River Severn (Welsh: Afon Hafren, Latin: Sabrina) is the longest river in Great Britain, at about 354 kilometres (220 mi), and the second longest in the British Isles, behind the River Shannon. It rises at an altitude of 610 metres (2,001 ft) on Plynlimon, Ceredigion near Llanidloes, Powys, in the Cambrian Mountains of mid Wales. It then flows through Shropshire, Worcestershire and Gloucestershire, with the county towns of Shrewsbury, Worcester, and Gloucester on its banks. With an average discharge of 107 m³/s at Apperley, Gloucestershire, the Severn is the greatest river in terms of water flow in England and Wales.

The river is usually considered to become the Severn Estuary after the Second Severn Crossing between Severn Beach, South Gloucestershire and Sudbrook, Monmouthshire. The river then discharges into the Bristol Channel which in turn discharges into the Celtic Sea and the wider Atlantic Ocean. The Severn's drainage basin area is 11,420 square kilometres (4,409 sq mi), excluding the River Wye and Bristol Avon which flow into the Severn Estuary. The major tributaries to the Severn are the Vyrnwy, Teme, Warwickshire Avon and Stour.

Daniel DeWayne Severn (born June 8, 1958) is an American mixed martial artist and professional wrestler, notable for his success in the early years of Ultimate Fighting Championship tournaments. Severn has fought and wrestled for many mixed martial arts and professional wrestling promotions, including King of the Cage, PRIDE FC, Cage Rage, WEC, RINGS, and the World Wrestling Federation. He holds a professional MMA Record of 100–18–7 and is a UFC Hall of Famer and a former UFC Superfight Champion.

In professional wrestling Severn is a two-time world champion, having won the NWA World Heavyweight Championship twice. As of January 2011, at age 52+, Severn still competes in MMA Competition and pro wrestling. Along with competition, Severn also makes special appearances and autograph signings. He also travels the globe instructing seminars in MMA, grappling, and amateur wrestling. More importantly, Severn is focused on getting his Law Enforcement Training (Danger Zone: LET) developed into more police departments, corrections facilities and the military.

Forrest Griffin (born July 1, 1979) is an American mixed martial artist. Since 2005, he has been signed to the Ultimate Fighting Championship where he is a former UFC light heavyweight champion.

Griffin, a former Georgia police officer, first rose to prominence after winning the first season of The Ultimate Fighter. In the tournament finals, he fought and defeated Stephan Bonnar in an exciting brawl that is widely credited as sparking the current success of the UFC. He went on to serve as a coach on the 7th season of the reality series opposite Quinton Jackson, whom he later defeated at UFC 86 to become the Undisputed UFC Light Heavyweight Champion. He and Rashad Evans are the only fighters to go from winning The Ultimate Fighter to winning the UFC Light Heavyweight Championship.

Griffin graduated from Evans High School in Evans, Georgia, a suburb of Augusta. He then graduated with an A.B. in Political Science from the University of Georgia. While attending school, Griffin served as a law enforcement officer for the Richmond County Sheriff's Office in Augusta, Georgia. He also served as a patrol officer with the University of Georgia Police.

Kenneth Wayne Shamrock (born Kenneth Wayne Kilpatrick; February 11, 1964) is an American mixed martial artist, UFC Hall of Famer and professional wrestler. Shamrock emerged as one of the biggest stars in the history of mixed martial arts, headlining over 15 main events and co-main events in the Ultimate Fighting Championship and Pride Fighting Championships during the course of his career and set numerous pay per view records with his drawing power. Shamrock is widely considered to be a legendary figure and icon in the sport of mixed martial arts. Shamrock was named The World's Most Dangerous Man by ABC News in a special entitled "The World's Most Dangerous Things" in the early part of his UFC career, a moniker which has become synonymous as his nickname.

Shamrock became known early on in the UFC for his rivalry with Royce Gracie. After fighting to a draw with Gracie in the inaugural Superfight, he became the first UFC Superfight Champion after defeating Dan Severn at UFC 6; the title was eventually renamed the UFC Heavyweight Championship when weight categories were introduced to the UFC. He was also the first foreign MMA Champion in Japan, winning the title of King of Pancrase. During his reign as the UFC Superfight Champion, he was widely considered the #1 mixed martial artist in the world. Shamrock was also ranked by Inside MMA as one of the top 10 greatest mixed martial arts fighters of all time.

Kimo Leopoldo (born January 4, 1968), or simply Kimo, is an American mixed martial artist. He made his MMA debut at UFC 3 in 1994 losing to Royce Gracie by submission. Kimo's fighting style has been described as freestyle, with a mixture of striking and grappling techniques.^{[citation needed]}

He was credited with a black belt in Taekwondo in his Ultimate Fighting Championship debut at UFC 3. Kimo is well known for his Christian beliefs: he sports many religious tattoos, and entered the arena at UFC 3 carrying a large cross on his back.

At UFC 3, Kimo fought the reigning, defending UFC 1 and UFC 2 champion Royce Gracie in the quarterfinals. Kimo gave Gracie his toughest fight to date but eventually lost the fight via submission. Gracie was dehydrated following his bout with Kimo and, as a result, Gracie's corner threw in the towel before the start of his next match. This subsequently made Kimo into an enormous star in the martial arts world.

After three straight wins in Japan, including a dominant, impressive win over UFC 2 finalist Pat Smith, Kimo returned at UFC 8 and fought reigning UFC champion Ken Shamrock in a title match for the UFC Superfight Championship, but lost early in the fight via submission due to a kneebar.