I chose Dark Danny because even though he's honestly one-dimensional, I still enjoy his concept and execution.

Even though the villain being a dark version of the hero is hardly an original idea, in Danny Phantom Danny does not turn evil out of nowhere, and he does actually have somewhat of a tragic past (his friends and family dying). However, this tragic justification is all but gone when his ghost self fuses with Vlad's (the overarching antagonist) evil ghost self, and he goes around committing mass murder and destruction, using a plethora of different powers and abilities. The way these powers are used, while not terribly creative, were still fun to watch.

Another reason why Dark Danny is my favourite Nickelodeon Pure Evil is because of his concept. The concept of part of the hero and part of the main villain fusing together to create an even greater threat is executed well, at least in my opinion. I also enjoyed the time-travelling concept, even though it was initially a little bit confusing. The episode he was in (Ultimate Enemy) was generally very creative and entertaining, and one of my favourite Danny Phantom episodes.

One last reason why I like Dark Danny is simply because of how menacing he is when he is presented. He is quite dark (hence his name) for a kids' show villain, destroying Amity Park and murdering who knows how many people. What I especially like about him is about how unsparing he is, even to fellow ghosts. This Evil vs. Evil. concept at least adds a little bit more depth to him instead of him simply teaming up with them. Other than that, he has quite a bit more presentation to him than other ghosts Danny has fought.

Overall, the main reason why Dark Danny is my favourite Nickelodeon Pure Evil, despite being somewhat superficial, is because of his and the episode's creative concept, execution, and presentation. If Danny Phantom hadn't been prematurely booted, I'm sure he would have made for an awesome ultimate villain.

Future Phantom, as Fallen Heroes are my fav. type of villains.

Dark Danny cause he was a One-Shot Fallen Hero who could have been the ultimate enemy if DP had a true series finale.

(I know I'm late but) Dag. I love his design, and David Koechner usually does comedic roles so it's a bit surprising that he can play a terrifying serial killer.