The Saban-produced Mon Colle Knights aired on Fox Kids in North America from July 2001 to September 2002, consisting of 45 episodes.

[2] According to Justin Sevakis, the only reason why the anime was only available on Crunchyroll in Japanese is that the masters for the English dub couldn't be found.

[7][8] The series features Mondo Ooya and his classmate/girlfriend Rockna Hiiragi (Rokuna in the Japanese version), whose scientist father Professor Ichiroubei Hiiragi invented a way to travel to Mon World (Roku Mon Sekai: the Six Gate World), where all sorts of magical creatures live.

Almost every episode, they battle Professor Hiiragi's rival Prince Eccentro (Count Collection in the Japanese version) and his two girl underlings Gluko and Batch (Goruko and Bachi in the Japanese version) who are after the same thing as the Mon Colle Knights, except that they intend to use the items to dominate both worlds.

These are the six realms of Mon World: Note: The titles for the Japanese version and the summaries are taken from Discotek Media's upload to Crunchyroll.