Yonkō

The Yonkō (四皇, lit. "Four Emperor") are the four most powerful and only legal tamers allowed in the Digital World. Each of the Yonko govern over one of the four cardinal directions and are limited to living in that specific area.

Abilities
As known, humans are not allowed or granted freedom within the Digital World. Any human that enters is considered a virus and instantly set to be deleted and returned to the Human World. The Four Yonko are all an exception to this rule.