"Mysterious Four Heroes" are four mysterious warriors pointed out in the official poster certified by Yuangu, and are collectively called "Mysterious Four Heroes" in the Altman series. Mysterious Four Olympians are four Otto warriors who are set as powerful and mysterious in Altman's series of works, and each of them has powerful power to reverse the crisis of the universe.
The mysterious Sihui comes from different dimensions of the universe, and its whereabouts are extremely mysterious. The King of Ott appeared relatively frequently, and once repaired the whole universe with his own powerful power in the Emerald Altman.
Reggie Altman only appeared in Gauss Altman VS Justin Altman: Decisive Battle, Otto Galactic Battle: Great Plot twice, Sega Altman only appeared once in the legend of Altman, and Noah Altman only appeared once in the TV versions of Ultraman Nexus 37 Words and THEMOVIE! Beria's galactic empire appeared twice.