- Main article: Hellfire Assault
|Location||The Iron Bulwark, Hellfire Citadel|
Siegemaster Mar'tak is an orc located at the Iron Bulwark in Hellfire Citadel. She takes part in the Hellfire Assault encounter but flees upon reaching 50% health. She returns in the next encounter directly afterwards as the one piloting the Iron Reaver.
- Howling Axe — Hurls a notched axe at a target, which strikes all marked targets before returning to the caster. Upon impact with each target, inflicts 166250 to 183750 Nature damage to enemies within 8 yards.
- Shockwave — Sends a shockwave in a targeted direction, inflicting 170625 Nature damage and knocking back enemies within 4 yards of each impact.
- Inspiring Presence — Inspires nearby units, increasing damage done by 10%. This value increases while the caster fights enemies.
- She refers to the Iron Horde as the Fel Horde.
- Mar'tak is technically the only boss to take part in two consecutive encounters, other than Deathwing.
- Patch 6.2.0 (2015-06-23): Added.