Complex sentence: Born as Esplin 9466 Primary and later known as Visser One, he is the leader of the Yeerk forces on Earth and the main villain in the series, having inherited the planet from Edriss 562, who was Visser One at the time.
Split into simpler sentences: Born as Esplin 9466 Primary and later known as Visser One, he is the leader of the Yeerk forces on Earth and the main villain in the series. He inherited the planet from Edriss 562, who was Visser One at the time.