Fraziel

Fraziel was a Human skilled with magic. He created the Goblin species with his abilities, to help him create the Great Machine.

Appearance
Fraziel's appearance is never shown, for he wears a hood that conceals his face. However, his hands are free and appear to be fair in color. His eyes glow purple, likely a side-effect of him being a sorcerer. Strangely, despite being human, he has green blood like many of the creatures and Goblins of Ogriss.

Personality
Fraziel isn't alive long enough to get a thorough read on who he is as a person. However, he could've been described as power hungry and self-obsessed, as he made servants to help him achieve the dream of re-creating the world in his image.

Biography
Not much is known about Fraziel. He is sorceror, meaning he can do magic, but it is unknown if he acquired or inherited his powers biologically. Throughout his life, he sought to make a machine to re-create the world with. To this end, he made the Goblins, who's specialties would help him realize this dream. As he comes close to completing the machine, one of his creations, Naxxus, betrays him, sabotaging the machine and causing it to explode.

Fraziel barely manages to make it out of the the mines, but even as he does, he dies shortly after. He tells Grommel, before he passes, that one of the brothers was responsible, leading Grommel to try and find out who.

Trivia

 * Of the commanders, Fraziel seemed to favor Grommel.
 * Fraziel is the only human in the game.
 * Despite being human, Fraziel has green blood and purple eyes. The purple eyes can be explained by his ability to use magic, perhaps, but his blood has no explanation.