Brainiac, once Krypton's all-knowing planetary computer, comes to Earth as part of his information-gathering trek across the galaxy. But, as Superman discovers, Brainiac's intent after gathering the world's knowledge is to destroy the Earth.
Did You Know?
You destroyed those planets, didn't you? And every living soul on them!
Only their knowledge was important. It is what I was programed to colect and protect.
But why kill?
The fewer beings who have the knowledge, the more precious it becomes.