Though RedaKai may seem like another of those worthless Bakugan rip-off (which is ironically already a rip-off), it's actually a decent show. The show is about a boy named Ky, who is looking for pieces of an energy force called Kairu. Traveling the world with his friends Maya and Boomer, he protects the pieces from villians in hope of becoming the most powerful Kairu warrior of all, a RedaKai. The premise is actually original, with the plot sequence in each episode interesting enough. The character designs are also well-done, though they seem to have a somewhat shallow personality, with little to no character development. The good guys are somewhat obvious, with a leader, a strong headed girl, and the typical comic relief. The "villians" if you can really call them that, are more rude than ruthless and mean rather than cruel. The voice acting is decent, though, with the characters' voice spot-on. The action scenes are easily the best part of the show, well executed and beautiful with cool interaction to the environment.
All in all, RedaKai is a decent show with good plot sequences, interesting character design, beautiful environments, and epic action sequences. The characters are somewhat shallow but won't get in the way of your enjoying the show. You definitely want to watch this.