The young titular character himself, Pajama Sam, is shown having light turquoise hair and skin and wearing a pair of blue footed pajamas and a red cape. Many of Sam's adventures involve him emulating his hero, the comic book superhero Pajama-Man, and seeking to physically conquer his fears and dislikes (e.g. darkness, thunder and lightning, healthy foods) and altruistically help others. Sam is young and a little naive, and obviously has an active imagination. Sam befriends many inanimate objects throughout his adventures, such as a mining cart (No Need to Hide when It's Dark Outside), a wooden boat (NNHIDO), and a piece of broccoli (You Are What You Eat from Your Head to Your Feet). These companions assist him in the games.
Source: Wikipedia, "Pajama Sam", available under the CC-BY-SA License.