- Main article: Rotface
Big Oozes are combine from the Little Oozes in Icecrown Citadel.
- Radiating Ooze-The Radiating Ooze inflicts 2438 to 2562 damage to enemies within 10 yards, it will also cause the Big Ooze to merge with other nearby Ooze.
- Sticky Ooze-The Ooze sprays a puddle of Green Goo near the target. The Green Goo inflicts 2925 to 3075 damage every 1 sec and decreases move speed by 50%.
- Unstable Ooze-Increases damage dealt by 20%.
- Unstable Ooze Explosion-Inflicts 9750 to 10250 damage to enemies within 6 yards.