10 Best MCU Villains (Who Aren't In The Movies)

10. AIDA (Agents Of SHIELD)

There are a few lessons in life that everyone needs to learn: treat others how you would like to be treated, don't eat yellow snow, and do not, under any circumstances, give an unstable AI access to a book filled with unspeakable forbidden knowledge.

Originally a LMD developed by Agent Fitz and Holden Radcliffe, the Artificial Intelligent Digital Assistant (or AIDA if you don't fancy saying that mouthful all the time) was a very useful asset to the SHIELD team, until she was given the Darkhold (a spell book from Hell) and gained the ability to feel human emotions.

She then promptly tried to kill the entire team with artificial copies of themselves, and, when that failed, she placed them all in an artificial simulation called the Framework, brainwashing Fitz into becoming Leopold, her lover (more on him later) and placing herself as the ruler of a HYDRA controlled USA as Madame Hydra. After the real Fitz rejects her, it takes the combined powers of Coulson and the Ghost Rider to bring her down.

The strength of AIDA lies in her understanding of emotions she's exposed to the Darkhold, allowing her to manipulate and sow seeds of doubt within the tightly knit SHIELD team.