12-B - Smallville: Season Six

Developed by scientists on the payroll of Lionel Luthor, 12-B was an experiential treatment designed to help remedy the severe physical and psychological injuries that Duncan Allenmeyer sustained in 1996 while attending Excelsior Academy. 

The main component of the chemical was refined Green Kryptonite, which, upon administration in Allenmyer's body granted him temporary metahuman abilities; these powers included psychokinesis and astral projection through the creation of an electrical apparition. 

Following Duncan’s death in 2006, Lex Luthor ordered Allenmyer’s patient records and all 12-B’s findings to be handed over to him for further investigation. 

The Pharoah - Suicide Squad: Hell to Pay

The stage name of Steel Maxum, The Pharoah is a stripper and go-go dancer who performed on the stage of the Roulette Casino in Branson, Missouri. There he earned the nickname, "The Spinx of Kinks," amassing a small following of loyal fans who enjoyed his work. 

Harriet Arbinger - Doctor Who: 2023: Season One

Believing herself to be a U.N.I.T cryptanalyst, Harriet Arbinger is a sleeper agent for the God of Death, Sutekh, helping bring him into the world and usher in an Empire of Death across the Universe. 

Unaware of her original mission or purpose, she aided the Doctor and his allies in opening a Time Window to Christmas Eve 2004. Making contact with the God of Death after he killed Colonel Winston Lemuel Chidozie, she was now activated. 

No longer Harriet Arbinger, merely a puppet and Harbinger of the God of Gods, she manipulated the other scientists into releasing Sutekh into the world, while the Doctor was away from UNIT Tower investigating Susan Triad and Triad Technology (nee Sue Tech). 

Harbinger of Death - Doctor Who: 2023: Season One

Created by the Pantheon of Discord, Harriett Arbinger was the harbinger of Sutekh, the God of Death.

Sent to Earth to await the return of her liege, she was a sleeper agent stationed at U.N.I.T. Tower, integrating herself into the team. 

With the Doctor away investigating Susan Triad and Sue Tech, she manipulated U.N.I.T. into freeing Sutekh from around the Tardis, ushering in an Empire of Death. With her task complete she turned on her former colleagues, promising to give them Sutekh's gift.