"The Wardens are large, monstrous armored bipedal aliens that possess various glowing patterns and spikes all over their bodies (with some spikes even making up what appears to be their teeth.) An interesting thing to note about the glowing patterns and spikes is that certain Wardens have different colors to the patterns and spikes on their bodies depending on what type of superpower that they grant The Protagonist when they are absorbed."

Source: Saints Row Wiki