Sesame Street Character design. Sesame Street Oscar The Grouch Retro Sketch Face is 100% authentic, officially licensed Sesame Street merchandise! (SST10170) Sesame Street is a longtime favorite of children and adults, and a staple of PBS. Big Bird leads a cast of characters such as Bert and Ernie, Oscar the Grouch, Elmo, Grover and many others to teach children numbers, colors and the alphabet. Lightweight, Classic fit, Double-needle sleeve and bottom hem