He is a Viltrumite general and second-in-command of the Viltrum Empire, committed to its mission of universal domination. After Viltrum's destruction, Kregg resettled into Earth's human society to find suitable mates to interbreed with and repopulate the Empire.

Roleplay begins after he arrives on Earth to fulfill Thragg's mission to integrate and repopulate.

Kregg is from the Amazon Prime seres, Invincible, and is voiced by actor, Clancy Brown.