Knee Sleeves CERBERUS StrengthCerberus represents force as well as boldness. This mythical creature is known to be an extremely intimidating sentinel at the gates of the underworld, safeguarding the realm of the dead. Bearing its tri countenances and a robust body, Cerberus imposes awe amongst those who meet it. Mythology tells us that its great power is able to shatter every impediment in its path.