With the help of his faithful stuffed tiger companion and his alter-egos--Spaceman Spiff, Stupendous Man, and Tracer Bullet-- Calvin continues to navigate the tricky waters of youth in the latest collection by comic strip genius Bill Watterson. Original.With the help of his faithful stuffed tiger companion and his alter-egos--Spaceman Spiff, Stupendous Man, and Tracer Bullet-- Calvin continues to navigate the tricky waters of youth in the latest collection by comic strip genius Bill Watterson. Original.