It's definitely Nemesis Kid! This looks to be a great show!!!
Here\'s a link to Comics Continuum's site, which talks about Saturday's ep, "The Karate Kid"!, with a few images.
And if you don't care about the pictures and just want to know the synopsis. Here's how the network describes the episode:
<span class="spoiler_containter"><span class="spoiler_wording">Click Here For A Spoiler</span><span class="spoiler_text">"When the dreaded Legion Auditions produce just one potential new member -- Nemesis Kid -- Superman goes out recruiting, and finds an unlikely candidate to join the Legion. A perpetual underdog, Karate Kid has no super powers -- which goes against Legion membership rules -- but Superman believes he has the heart to join the Legion. As the Legion hunts down Grimbor the Chainsman, Karate Kid believes he can be an asset, while the others worry he is only putting himself in harm's way. "
Keith Ferguson provides the voice of both Karate Kid and Nemesis Kid.
"Karate Kid" was writted by Eddie Guzelian and directed by Brandon Vietti and Scott Jeralds. </span></span>