John Dee was a low-level LexCorp employee who was found guarding smuggled weapons in a company's warehouse after a sweep by the Justice League. He was arrested and sent to Stryker's Island, where he volunteered as a test subject for an experimental ESP machine dubbed the Materioptikon.
Though he was outwardly a model prisoner, on good terms with the warden and guards, Dee harbored an inferiority complex and developed a strong desire to become powerful enough to defeat the Justice League and win the admiration of every super-villain. When his parole was denied and his wife Penny announced she had found someone else, Dee was pushed over the edge. During a prison mutiny, Dee sneaked into the doctor's lab and exposed himself to the full power of the Materioptikon. At first, it drove him into a catatonic state, but when he woke up, it gave him full extra-sensory power. Then, he escaped prison and went after Penny. He got inside her dreams and dubbed himself Doctor Destiny, right before mentally torturing her into insanity (which ended up killing her).
Powers and Stats
Name: John Dee, Doctor Destiny
Origin: DC Animated Universe
Attack Potency: Wall level
Speed: Normal Human
Lifting Strength: Regular Human
Striking Strength: Wall Class
Durability: Wall level
Range: Several meters
Standard Equipment: None.
Intelligence: Technically sense dreams are in the mind and he controls it.
Weaknesses: Normal human weaknesses but has survived situations which would kill an average human