Adam (Buffyverse)

Adam is the main antagonist of season 4. It was created by The Initiative and thus a weapon to defend the United States of America.

As Human
Adam was once a human member of the Initiative who was killed by Mayor Richard Wilkins, he was one of Maggie Walsh's favorite agents, and she promised to bring him back to life and put 314 Project inside him.

Creation
Adam had human parts combined demonic parts, and robot parts, he had the advancement of technology with humanity's adaptability and superior strength. Later when Adam woke up from the 314 Project, he killed Maggie Walsh as his first independent act.

Confront Final
Adam was defeated when Buffy, Xander, Willow and Giles combined their essence into Buffy's body that made the Enjoining spell, the collective eventually summoned the strength of First Slayer and used magic to combat Adam's attack magic. And with the combined strength of Buffy and First Slayer, she managed to find Adam's power source and destroy it, and shutting it down.

Legacy
After Adam's defeat, Buffy has a dream in which she sees her human form, and when Buffy asks her name, Adam's dream replies that no man can remember. After three years, The First Evil used the form of several enemies of Buffy to provoke Spike being The Master, Drusilla, Mayor Richard Wilkins, Glorificus, Adam and even Warren Mears.