In *Danny Phantom*, **"The Ultimate Enemy"** introduces **Dark Danny** (also known as **Dan Phantom**), the most powerful and evil version of Danny Phantom. Dark Danny serves as the main antagonist of the episode and represents what Danny could become if he loses his humanity and succumbs to his darker impulses.

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### **Character Profile: Dark Danny / Dan Phantom**

#### **Basic Information**
- **Full Name**: Daniel "Danny" Fenton (in an alternate timeline)
- **Alias**: Dan Phantom, Dark Dan