Buzz Lightyear (Lightyear)

Buzz Lightyear, the film character who inspired the toy line in-universe, debuted in the second Toy Story spinoff film, Lightyear. In the film, Buzz is a space ranger who protects and explores the galaxy. But, on a trip to an uncharted planet, Buzz and the crew of the Turnip become stranded on that planet. Their only hope of getting off the planet is to rebuild their ship and begin experimenting hyperspeed propulsion systems powered by crystallic fusion. Buzz is chosen to be the test pilot. But during these flight tests, Buzz quickly learns upon his arrival back he experiences time dilation. Four years pass for him after a four minute flight.