|Former affiliation(s)||Warsong clan, Mag'har|
|Occupation||Exarch of the Lightbound|
|Relative(s)||Grommash (father), Golmash (grandfather)|
Exarch Hellscream is the son of Grommash Hellscream from the alternate universe Draenor. Having sided with the Lightbound and become one of their exarchs, he is considered a traitor by the Mag'har. High Exarch Yrel considers him "an example for his people to follow".
- The short story Hellscream states that, in the alternate universe, Grommash did not have a child with his mate Golka before she died. This means that Exarch Hellscream is not the son of Grommash and Golka but rather that Grommash had a child with someone else after the events of Warlords of Draenor. This would also mean that Exarch Hellscream is not an alternate version of Garrosh but a separate character altogether.