Note: Due to all ghost ninja being identical in appearance, it is impossible to determine who is who in the television series. As such, any appearances of a ghost warrior will be cataloged here, regardless if they are in fact Hackler.
During Morro's confrontation with the Ninja in Stiix, he summoned several more Ghost Warriors to attack them. However, the Ninja quickly obtained Aeroblades and defeated the ghosts with little to no effort.
- 47. "Stiix and Stones"