Overlord GAIA. A powerful entity that resides inside the center of the digital world. This Machine like entity is capable of advanced prediction, capable of determining the most likely outcome to perfection. The only results it cannot read are those caused and directly effected by itself.
It invented digital life as we know it, Bringing Three Guardians into existence, the first of Vaccine, Data, and Virus types, allowing them to spread the seeds of life. Some time much later however, GAIA’s Experiments began to get more invasive. It created the Chaos series Digimon, using Chaoslord to establish and determine the best Lifeform in the digital world that could ever beat such a creature.
Normally, one isn’t able to damage GAIA. But when it’s power is reduced through the power of it’s backup restricting it, It can be defeated. It will use it’s tubes on its back to fire powerful beams of light capable of destroying the strongest of Megas (Glory Weapon). When in danger, it will detach it’s hands, which alone are capable of destroying a sizable fighting force. The hands can reduce the attack and defensive capabilities to zero (Reduction Ray) before destroying them with powerful melee attacks.
If all else fails, GAIA Shall not let any experiment defeat it. It will engage a system wipe, causing a massive explosion using GAIA itself as the catalyst, effectively destroying the universe.
Digimon World 2- Overlord Gaia
by Shen: King of Digimon