Was Dai Shi aware of the existance of Rita Repulsa & Lord Zed?It was stated on the show that Dai Shi was defeated and imprisoned 10,000 years ago which was the same time that Rita's invaision was stoped by Zordon .
I think Dai-Shi was battling in the "Beasts War" prior to Rita's invasion to Earth (maybe a few years before?). And he was also imprisoned before Rita came to Earth.
But by that time Rita was already a great evil sorcerer of the universe and was proclaimed (by herself ) "The Empress of Evil".
So I don't think Dai-Shi was aware of the existance of Rita and Lord Zedd and what they were doing in the universe (if he was aware, he could have asked them for help in the "Beasts War"... it couldn't have worked anyway ).