The Ghostly Wail is the ability to generate an extremely powerful and highly destructive scream of ecto-energy from one's vocal cords and mouth, accompanied by a ghostly moaning sound. This power is unique to Danny Phantom and his dark future self.
In the future set in "The Ultimate Enemy", Dan Phantom develops this power and uses it to bring devastation upon Amity Park. Later, after meeting his dark future self, Danny gains the ability to use the Ghostly Wail, eventually using it to defeat Dan.
The ghostly wail is Danny's most powerful technique. With it, Danny can cause massive damage to ghosts and humans and can destroy solid objects or send them flying. It can completely destroy ghosts that are too weak to withstand it.
- This power drains Danny's energy extremely quickly. Just one use can leave him with no energy left at all, forcing him to revert to his powerless human form. Inexplicably, he does not suffer this drawback in "Phantom Planet".
Danny only uses this power against extremely powerful foes whom he is unable to defeat by other means.
- The Ultimate Enemy: Using this power, Danny was able to defeat all his old enemies in the ghost zone at once. He used it twice in one battle to defeat Dark Danny.
- King Tuck: Danny tried to use this power against King Tuck's sphinx, but it failed.
- Kindred Spirits: Danny used this power to defeat Plasmius quickly.
- The Fright Before Christmas, Phantom Planet: Danny used this power in each episode to defeat a huge group of enemies all at once.
Why he didn't use such a powerful technique against Undergrowth ("Urban Jungle"), Vortex ("Torrent of Terror"), or Nocturn ("Frightmare") is unknown. It is possible that he didn't want to take the chance that his attack would fail against these extremely powerful ghosts, as if it failed he would have been rendered defenseless.
- 208. "The Ultimate Enemy"
- 210. "The Fright Before Christmas"
- 215. "King Tuck"
- 217. "Kindred Spirits"
- 312. "Phantom Planet"
|Flight | Ghost Ray | Intangibility | Invisibility | Overshadowing | Ghost Physiology | Spectral Body Manipulation|
|Cryokinesis | Duplication | Ghost Shields | Ghost Stinger | Telekinesis | Teleportation | Transformation|
|Atmokinesis | Electrokinesis | Ecto-Energy Constructions | Energy Absorption | Energy Strike | Ghost Portal Creation | Ghost Sense | Ghostly Wail | Going Ghost | Power Augmentation | Pyrokinesis | Reality Warping | Shapeshifting|
|Chronokinesis | Food Manipulation | Fusion | Intangibility Fusion | Plant Manipulation | Repulsion Field | Technopathy|