Dark Danny

Dark Danny in comparison to the younger Danny Phantom is taller, boasting a more bulky and muscular frame. As he is a fusion of Phantom and Plasmius, his appearance incorporates elements of both, as he has snow-white hair but like Vlad sports pale blue skin, red eyes, pointed ears, fangs and a goatee, his hair even being tied back into a ponytail as the hair atop his head is flaming. His outfit is largely the same as that of the original Phantom, albeit with black gloves instead of white and like Vlad he sports a cape which is white on the outside and black on the inside.

While all of the other antagonists that Danny encounters across the series are hostile towards him, they're all more over-the-top comedic and flanderized rather than truly evil. Some of them even come across as amicable and or sympathetic at times. However, this does not apply to Dark Danny who lacks any and all redeeming qualities both in and out of universe.

Dark Danny is, by definition, pure evil. As a fusion of Danny's ghost self and Vlad's, he retained Danny's memories, but he is filled with all of the worst aspects of both his and Vlad's personalities, including Vlad's arrogance and cruelty towards others while surprisingly having not even one bit of a positive trait such as their shared love for Maddie as all of the positive qualities and humanity were transferred to Danny Fenton. Unlike most of Danny Phantom's enemies who have, to some degree, a moral conscience, Dark Danny possesses no such trait. He is outright wrathful, cruel, remorseless, narcissistic and more than willing to kill even the people he once cared about just so he can continue his existence. Further, as he killed the human half of him, he is literally incapable of any positive or redeeming qualities or developing them. Due to possessing no humanity whatsoever, Dark Danny can accurately be described as a psychopath and by this date the most evil villain Danny has encountered.

Dark Danny would finally be released from the Fenton Thermos when an enraged Vlad pushed it over and shattered the device after Clockwork refused to help him following the events of Phantom Planet. Ecstatic at his freedom, Dark Danny proceeded to subdue Clockwork while Vlad fled. He then overshadowed the Master of Time, resulting in the two merging much like what happened with himself and Vlad's ghost half from his timeline. Emerging as the dominant consciousness, Dark Danny proceeded to use his new powers to cause a rift in the space-time continuum before leaving to destroy present-day Amity Park.

He attacked Danny and Vlad using his new powers dragging them across time and space, trying to kill them. Though Danny’s unstable powers condition gave him an edge, once Danny’s powers restabilized, he couldn't beat him and Vlad who exploited his absorption with Clockwork unstable, finally they managed to separate him from leaving Dark Danny at the edge of cease to exist, glitching out of time.

This causes his emotions to resurface, suffering all the guilt for what he has done, and the pain of all the ones he lost return at once. Seeing this in an act of mercy, the group (Danny, Vlad and Clockwork) save him, Vlad in a way to atone willingly let be possessed to contain the unstable Dark Danny momentarily.

Danny left entrusting Vlad and Dark Danny to Clockwork's care, later on he takes them to Vlad Mansion where they release Dark Danny and put him in a mindless unfinished clone of Danny. Subsequently, the clone body open its eyes, which turned red. Implying he fully merged with the body and became a half-ghost again.

Jazz found him with the C.A.T. answers and after discovering Dark Danny, used the Fenton Boooooo-merang to find the real Danny in the future so he can find a way back to his own time and stop his evil self. After cheating on the C.A.T., Mr. Lancer called the Fentons over to the Nasty Burger for a discussion.

Sam and Tucker came as well to warn them of the impending explosion, and Jazz, using the Fenton Ghost Peeler, exposed Dark Danny to all of them.

Dark Danny mocked Danny's parents for failing to notice that their son was half-ghost and noted Jazz was the only one to notice. He then tied them all to the Nasty Sauce vat with ectoplasmic goo just as it was about to blow.

Just then, Danny returned from the future and saw what his future self was up to, and they battled. Even with the aid of the Specter Deflector and the Ghost Gauntlets, Dark Danny still proved too much for Danny but did not kill him as his own existence was at stake. Dan mocked Danny for being powerless against him and promising to protect his friends and family.

Refusing to let down his friends and family, Danny unleashed his newly acquired Ghostly Wail. Dark Danny was shocked, as he himself didn't develop that power for another ten years. Danny took advantage of Dark Danny's surprise to unleash another Ghostly Wail, weakening Dark Danny enough for Danny to trap him in the Fenton Thermos.

Clockwork took the thermos containing Dark Danny and sealed it within his lair. Now that the events leading to Dark Danny had been averted, Dark Danny now exists outside of time and, due to this, the Observants declared that Dark Danny is now Clockwork's responsibility.

In the end, Dark Danny is seen attacking the thermos from the inside, attempting to break free while laughing evilly.

The separated Danny Phantom, now free of the conscience of Danny Fenton, was also filled with all of Danny's anger and negativity. Immediately he overcame Vlad and took the Ghost Gauntlets. He removed Vlad's ghost half and attempted to overshadow it, but it merged with the other half instead. This proved to be a grave mistake as Danny's ghost half became overwhelmed by the evil of Vlad Plasmius, had a power overload and transformed into Dark Danny, the most powerful and evil ghost to ever exist. His first act of malice was to murder his human half and destroy Vlad's entire mansion, though he left Vlad alive, presumably to tell the tale of his beginning.

For the next ten years, Dark Danny committed numerous atrocities against both Earth and the Ghost Zone, culminating in the near-complete desolation of Amity Park and the destruction of many ghosts. At some point, he crossed paths with one of his most powerful enemies, the Fright Knight, with the latter deciding to serve him. The Observants ordered Clockwork to kill Danny in the past to prevent Dark's rise.

Dispatching various ghosts from the future, Clockwork set in motion a series of events that led young Danny to eventually come to the future, where he encountered his dark older self. They fought, but Dan easily won, trapping Danny in the future while Dark Danny went to the past to cheat on the CAT and murder the Fentons, Sam, Tucker, and Lancer, in an effort to preserve his existence.

Dark Danny then disguised himself as his younger self and traveled to the past via one of Sam's and Tucker's time medallions to ensure his future by cheating on the C.A.T. and ensure the Nasty Burger will still be set to explode.

Dark Danny, also called the Phantom and Dan Phantom, is an evil future version of Danny Phantom from an alternate timeline, the result of a fusion between Danny's ghost half and Vlad Masters' ghost half. He is the main antagonist of "The Ultimate Enemy" and is by far Danny's most vile and evil villain in the show, being extremely powerful and having no remorse for any of his actions at all.

In the original timeline, before Clockwork's intervention, Danny used his ghost powers to cheat on the Career Aptitude Test by stealing the answers. Suspicious of Danny, Mr. Lancer called the Fentons to the Nasty Burger for a meeting. Danny's friends, Sam and Tucker, were also there. Tragically, due to the mismanagement of Irving Burns, the Nasty Burger's vat of highly explosive "Nasty Sauce" overheated and exploded just at that time, destroying the Nasty Burger and killing Danny's family, his friends, and Mr. Lancer, with Danny only surviving due to his ghost powers. As a result, the guilty, grief-stricken and orphaned boy was forced to move in with his archenemy, Vlad Masters, as he was the only person left on the planet who Danny felt could possibly hope to understand his situation.

Despite the history of animosity between the two, Vlad treated Danny with a great deal of sympathy. Blaming no one but himself, most notably his ghost self and completely taken over by grief, Danny asked Vlad to separate his ghost-half from his human-half to not only remove his ghost powers, but also so that part of him would not have to deal with his human emotions anymore, believing that they were responsible for the deaths of his family, friends, and teacher. He also thought that his ghost half would be free of all emotion, ridding him of the pain and guilt that he was feeling. Vlad honored his wishes, using the Ghost Gauntlets to separate Danny's ghost half from his human half.