The strip features two titular characters, six-year-old Calvin and his stuffed tiger Hobbes, and a small recurring cast including Calvin's unnamed parents, his classmate and neighbor Susie Derkins, his teacher Miss Wormwood, his school bully Moe, and his babysitter Rosalyn.
Friendship and antics A major recurring theme is Calvin and Hobbes's antics, which usually lead to trouble, often with Hobbes foreshadowing the outcome. The two also frequently argue and fight, often stemming from attempts to prove superiority while playing or talking. These conflicts usually end in a truce.
Art and academia Watterson used the strip to poke fun at the art world, principally through Calvin's unconventional
snowman creations but also through other expressions of childhood art. For example, when Miss Wormwood complains that he is wasting class time drawing impossible things, Calvin occasionally describes his art as on the cutting edge of the
avant-garde. Watterson explains that he adapted this jargon from an actual book of art criticism. Watterson also lampooned academia. Calvin indulges in what Watterson calls "pop
psychobabble" to justify his destructive rampages and shift blame to his parents, citing "toxic codependency". The Sunday, June 21, 1992, strip criticized the naming of the
Big Bang theory as not evocative of the wonders behind it and coined the term "Horrendous Space Kablooie", an alternative that achieved some informal popularity among scientists and was often shortened to "the HSK". The term has also been referred to in newspapers, books and university courses.
Calvin's alter egos Calvin imagines himself as many creatures and other people, including
dinosaurs, elephants, jungle-farers, and superheroes. Three of his
alter egos are well-defined and recurrent. The first is
Spaceman Spiff, an
astronaut who explores the galaxy; Watterson has stated that the idea of Spaceman Spiff came from an earlier attempt at a cartoon character called Spaceman Mort, who wore a
mustache, smoked a
cigar, and was meant as a parody of
Flash Gordon. The canyons and deserts featured in many Spaceman Spiff stories are based on southern Utah landscapes. The second is
Tracer Bullet, a
hardboiled private eye. He debuted when Calvin donned a
fedora to hide a terrible haircut Hobbes had given him. Tracer Bullet stories are drawn in an elaborate, shadowy black-and-white style evoking
film noir; Watterson drew them infrequently because the inking was time-consuming. The third main alter ego is
Stupendous Man, a superhero who wears a mask and cape made by Calvin's mother and narrates his own adventures. When his antics frustrate others, Calvin unsuccessfully claims he and Stupendous Man are different people. Stupendous Man has multiple superpowers, including flight, "high-speed vision", "muscles of magnitude", and a "stomach of steel".
Cardboard boxes Calvin has several adventures involving corrugated
cardboard boxes, adapting them for imaginative uses including
time travel and self-duplication. In one strip, Calvin shows off his Transmogrifier, a device that transforms its user into any desired creature or item.
Calvinball Calvinball is an improvisational game introduced in a 1990 storyline involving Calvin's negative experience joining the school baseball team. Portrayed as a rebellion against conventional team sports, the game became a staple during the comic's final five years. Its only consistent rules are that it may never be played with the same rules twice and that each participant must wear a mask. When asked how to play, Watterson stated, "It's pretty simple: you make up the rules as you go."
Wagon and sled rides Calvin and Hobbes frequently ride downhill in a
wagon or
sled (depending on the season) as a device to add some
physical comedy to the strip and because, according to Watterson, "it's a lot more interesting ... than talking heads". While sometimes the focus of the strip, the ride frequently serves as a visual metaphor while Calvin ponders the meaning of life, death, God, or other weighty subjects. Calvin and Hobbes's sled has been described as the most famous sled in American arts since
Citizen Kane.
G.R.O.S.S. (Get Rid Of Slimy girlS) G.R.O.S.S. (Get Rid Of Slimy girlS) is a club consisting only of Calvin and Hobbes. Calvin names himself "Dictator-for-Life" and Hobbes "President-and-First-Tiger". They hold meetings in Calvin's treehouse, which frequently devolve into fights. ==Books==