Head: VvV Drone & Overkill Neck
Body: Overkill

Apophis started "life" like countless prototype Battle Android Troopers before.

In an effort to build a better B.A.T., Overkill is always modifying and tinkering and tweaking.

Overkill himself later used a redesigned the Apophis body for his own next generation body.

Using the head and AI software of a class 2 Cobra drone, Overkill dubbed this experimental model Apophis, as the head reminded him of the ancient Egyptian pharoahs, and Apophis being the Snake God.

Having an advanced AI software, Apophis is viewed more like a younger brother to Overkill, than his usual paternal feelings for the B.A.T.s he builds.

Apophis' self-awarness, was one of the reasons for the B.A.T. rebellion. Dr. Mindbender and Destro concluded that a B.A.T. so advanced would too dangerous to live.

It is unknown if Overkill kept a backup of Apophis cognitive memory.