Ultraman Gaia: Once Again Gaia (2001)

After the battle against Zogu was over, both Gamu and Fujimiya began to live normal lives until another threat arrives on Earth - a surviving monster soldier of Zogu's army named Gakuzom. Ultraman Gaia takes place in yet another universe, one that is totally different from the world of the original Ultramen, as well as world of Ultraman Tiga and Ultraman Dyna. In a departure from most of the other series, there are two Ultramen as the main characters. They have conflicting philosophies in regards to defending the Earth from a mysterious, malevolent and extremely intelligent cosmic entity.