Primord

The Primords were savage humanoids created by Stahlman's Ooze.

Overview
The infection could be spread by contact with the ooze. The transformation occurred in stages. They communicated only in a growl and their faces developed bestial qualities and teeth changed into fangs. Their skin turned green and they began to generate heat in a way impossible for a human. Fully transformed creatures grew thick hair and partial hunchbacks. Banding together in groups, they instinctively sought to force humans into physical contact with the ooze that they would themselves transform. The transformation process took several hours under normal conditions, but in heightened temperatures, the full transformation could occur in mere seconds. They could survive great heat and even gunshots. They found cold temperatures, such as those generated by fire extinguishers, hurt them.

Primords were found both in the Doctor's universe and a parallel Earth. (DW: Inferno)

C19 preserved a small sample of the ooze in the Vault, injected it into a Dobermann pinscher and used it to create a mutated guard-dog known as the Stalker (MA: The Scales of Injustice).

Behind the scenes
The name "Primord" (from "primordial") comes from the closing credits, promotional and reference material to Inferno. It does not occur in the story itself at all.