There are many positions and ranks in the club, however there are only two members, Calvin and Hobbes. During meetings, they spontaneously switch positions to suit the club's needs. Calvin is the founder and leader of the club and, periodic demotions forgone, is "Dictator-For-Life", while Hobbes is the club president or First Tiger (again, temporary demotions forgone). They are seen acting as if there were many other members, imagining the behavior of their audience. Hobbes has sometimes asked if susie can join though in one comic she says she would not want to sit in a stupid tree house.