Below are the characters, based over your assigned reading you get to decide which these were the minor/major just because it wont help if i just hand over the answer although they are in order of most important/major to least sooo - thats ur answer haha :
Buck
Spitz
Curly
Dave
Sol-leks
Billie
Joe
Pike
Dub
Dolly
Skeet
Lone wolf
Judge Miller
Manuel
Francois
Perrault
Hal
Charles
Mercedes
John Thornton
Pete
Hans
Burton
Matthewson
Jim O'Brien
Yeehats