Who is Buzz Lightyear from the motion picture, Toy Story?

Buzz Lightyear is the newest, hottest toy on the market at the time of Andy's birthday. Buzz is a very cool, modern and flashy toy, with many gadgets, lights and sayings. In theory, Buzz is a space ranger sent to protect the world from evil aliens and lords. However, Buzz does not initially realize that he is just a toy and not the "real" Buzz Lightyear.