Kingu is a character in a story from an ancient civilization called the Babylonians. In this story, the gods had a big fight and one of the gods, Marduk, defeated another god named Tiamat. After winning the battle, Marduk made the world using different parts of Tiamat's body. One of these parts was Kingu's blood, which Marduk used to make humans.
So, Kingu is kind of like a made-up character in a story from a long time ago. People used to tell the story to explain how the world was made and how humans came to be. It's like a really old bedtime story!