Generate Cerberus names randomly, Each name has its meaning for your reference. Such as Alecto means "Unceasing Anger" Samael means Jewish Archangel Associated With Death And Destruction. You can choose the name you like best to use.
meaning "strong" or "vigorous"
In Gnostic and Hermetic traditions, Abraxas was a deity associated with both light and dark, good and evil. This name would suit a Cerberus that represents a balance of opposing forces.
Sharp tooth or claw
From Roman mythology, god of the underworld