Combatants
- Aalamgeer El-Hashem
- Alpha The Man-Eater
- Andromache the Great
- Angel of Death
- Armored Man 3.0
- Big Bully Brawler
- China Hunk
- Combatant Carnage
- Daikaiju
- Davey Mack Kid
- David Priapus
- Diego
- Dio di Sparta
- Dragon Bruno Singh
- Dur Suparman
- Frederick MacDougall
- Gijsbert de Groot
- Gim Rhee
- Gotch Bruno
- Hengel
- HERO
- High Chief Manu Ruopa
- Hitoriguntai
- Hitoshi Hajime
- Jimmy Da-Fi
- Joseph Schkalikov
- Julio Abella
- Kamisama
- Kayla
- KirāBotto
- Konga Ruopa
- Kumar Mattu
- Le Québécois
- Lee Chan
- Machine Gun Martinez
- “Man O’War” Lutalo Kamukama
- Master Shi Li
- Monster Mönkhbat
- Morinosuke
- Mustafa Muhammad
- Norman di Sparta
- Obese Lopez
- Pistrix
- Prince Henry Winston
- Sado Maso
- Sebastian Alexander
- Simson
- Slasher
- Stan Włotrzewiszczykowycki
- The All-American American Athlete
- The Big Thing
- The Leech
- The Wall
- Tito Saxon Roi d’la Pop
- Toa Nui
- Übermensch
- “Vunderkindom” Aleksandr Barchlov
- White Tiger
- Xou Lu
- Yokozuna Idofuno
- ZERO La Pesta Negra
- Zurab Chichua
Gamers
SuperStrongmen
- Alex Ivanov
- Devon Donovan
- Flex Jakande
- Frederick MacDougall
- Grace Schneider-Müller
- Louis Hudon
- Obese Lopez
- The Big Thing
SLAUGHTERSPORT Universe characters
- Andromache the Great
- HERO
- Muḥammad al-Fātiḥ
- Obese Lopez
- Scatman Brown
- Superfan
- The Big Thing
- World’s Greatest Fighter
SLAUGHTERSPORT Corporate staff
- PYGOD
- Raymond Corby
- Terence Dixon
- Le Prince de Corée
- Tony Morello
- Demonika HBIC
- Jake Rothenberg
- Michael K. Dutson
- William Elliot Welles
- SLAUTERSPORT Nation
- Adam Goldwater
- Alfonso Martinez
- Tommy Morello
Executive Directors
- Art Dishi, Ph.D.
- Sheikh Zayeb bin Sultan El-Hashem
- Mel Green
- Jake Rothenberg III
- Jin She
