Keenan Kai-James Cornelius is a Brazilian Jiu-Jitsu practitioner originally from Hawaii and is currently based in San Diego, California.
His competitive achievements include what has been called a "grand slam" in Brazilian Jiu-Jitsu, having won double gold medals at four major tournaments: the World Jiu-Jitsu Championship, Pan-American Championship, European Open Championship, and Brazilian National Jiu-Jitsu Championship - as a brown belt.
He is also known for his creation of guard techniques such as the Worm Guard.