The show is slated to go on air Saturday.
Mika, who has sung hits like "Mauja hi mauja", "Jugni" and "Tu mera hero", performs during the opening episode, leaving the audiences dancing to his peppy tunes.
But if sources from the sets are to be believed, Jarrett was so impressed by Mika's personality and voice that he commented how his wife would have enjoyed the performance the most due to her love for music.
Also, seeing the reaction of the live audience, Jarrett decided that Mika is a true singing sensation, and so he requested him for an autograph.
He also got himself clicked with Mika, so that he could take the picture back home and share it with his wife and friends.
"Ring Ka King" will see 30 international and Indian wrestlers fighting it out in the ring to become the 'king'.
Apart from Jarrett, the list of wrestlers includes names like Matt Morgan, Scott Stiner and Monster Abyss, as well as Indian wrestlers with international level training, like Jwala, Mahabali Veera, Romeo Rapta, Zoravar and Deadly Danda.
Indian cricketer Harbhajan Singh has been appointed the show's goodwill ambassador.