From Cartoon Network's massively popular show Ben 10, it's Omni-Kix Armor Diamondhead!
You think Diamondhead is a tough alien hero? Well check him out in his Omni-Kix armor! When he's hit by a blast of energy, he just flexes his mighty Omni-Kix Gauntlets! Not only do they shield him from danger, but they absorb the energy and fire it right back!
In an attempt to one-up his rival Kevin 11, kid-hero Ben Tennyson returns to the place where he found the mysterious Omnitrix. In the rubble, Ben discovers a previously missed "key" that fits into the body of the watch and kicks his alien heroes up to the next level with Omni-Kix Armor! Look out bad guys... these armored aliens are ready for even bigger battles!