Dr. Alan Holden is a character in the series.
History[]
Dr. Holden and his friend Dr. Wilder were U.S military scientists who worked on a project called "Valhalla" which was the choosing of three infants being induced with a dormant synthetic mind controlling virus that gave them free will to control themselves, leaving them with only a rash as an aftereffect.
But when the subjects were induced with a particular serum, it would make them mind controlled vegetables and use them as assassins whenever they heard the word "warrior". However they both had a change of decided to terminate it. The secret was kept for twenty years and during that time Dr. Wilder died from unknown causes and requested that the files of the project should be destroyed.
However the late scientist's greedy, sick-minded wife Claudette saw this as an excellent way to make money and persuaded their only daughter Katherine to help with this evil scheme.
Season 2[]
Dr. Golden was sharing some time with Claudette, but this was only a distraction to keep him at bay while Katherine was searching for the file as Claudette was planning to use the subjects as assassins for hire. Dr. Golden soon caught on and tried to persuade her to not go through with it, and that tampering with people’s lives was dangerous. At that time, Claudette appeared along with her henchman Klaus, and said that this plan was her reward for being the “dotey military wife”. She persuaded Dr. Golden to be part of it, but he refused and once again tried to persuade Katherine to stop this horrible plot, but was fatally shot in the back by Claudette.
However his efforts were not in vain as Superman foiled their plot and the files were presumably destroyed for good.