Invincible King Tri-Zenon is a tV series anime that premiered in fall 2000, produced by E&G Films.

About the production: the story comes from an original script, there are 22 episodes of about 25 minutes and its current status is "finished".

Its main genres are mecha and sci-fi, with themes such as Super Robot and Slapstick.

On AniList, Invincible King Tri-Zenon has an average score of 62%, an average score, and appears on 964 users' lists.

During the Edo Period, 3 mysterious space capsules were sent down to earth. Fear that it might bring chaos to the earth, the humans at that time buried these 3 objects down beneath the ground and entrusted a piece of descriptive map to the Kamui family. Today, these 3 objects were awaken one by one. The first to awaken, Tri-Zenon, one of the Zenon Guardians is now driven by the descendant of the Kamui family, Akira Kamui, his brother Ai Kamui and his friend Kanna. Aliens who descend to earth with a purpose will now have to face Tri-Zenon.

Official synopsis from AniList.