Nova Prime, also known as Nemesis Prime, is one of the main villains of the IDW Transformers comics. He is a cruel individual who could be called racist.
Originally a soldier known as Nova Major, he later became a leader in the Golden Age of Cybertron, but Nova was already an evil person. Nova Prime did not consider organic life and was willing to destroy it. Nova Prime had his punitive expeditions to other planets, where he Terraformed lives into Cybertronians. During one such expedition, however, he ended up in the Dead Universe, where the darkness chose him as a host, and so Nova Prime became Nemesis Prime.