The Data Overmind is supposedly as old as the universe itself. The Data Overmind noticed numerous biological creatures that had reached a level of self-awareness, but of these creatures humans were the first to reach a higher level of intelligence. It became aware of Haruhi Suzumiya when she unleashed a massive data flare on Tanabata, year 0. The Data Overmind can modify but not create data, and believes this ability to create data is crucial for its auto-evolution.