Complex sentence: Tomax and Xamot are first introduced in the "Pyramid of Darkness" mini-series, as the commanders of the Crimson Guard, as well as the heads of Extensive Enterprises.
Split into simpler sentences: Tomax and Xamot are first introduced in the' mini-series "Pyramid of Darkness". They appear as the commanders of the Crimson Guard, as well as the heads of Extensive Enterprises.