"Calvin the Bold" was a name by which Calvin insisted to be called in a 3-day story arc similar to that in which he insisted to be called "Calvin, Boy of Destiny". Calvin aimed to go by that name both at school and at home, though his mother suggested "Calvin the Deranged." Calvin also started only referring to himself in the third person. Anyone who simply called him "Calvin" would be either ignored, or Calvin would look around, wondering who the speaker was talking to. This was used on Miss Wormwood and Principal Spittle. His father, fed up with the fanciful moniker, told Calvin to kneel, and Calvin obeyed. Then his father dubbed him 'Mud'. Calvin resented this, of course, and stopped going as "Calvin the Bold".
However, he does refer to himself as "Calvin the Bold" once more during the introductory chant of a G.R.O.S.S. meeting.