Veteran Texas Ranger captain and mentor to John Reid.
Their family connection supports the larger conspiracy.
Cole is revealed to be Cavendish's brother during the betrayal at the silver mine.
Cole's apparent authority makes his betrayal especially damaging to John.
The character profile identifies Cole as a veteran Texas Ranger captain and mentor to John Reid.
Fuller protects Cole's conspiracy and joins his final pursuit.
Fuller sides with Cole after fearing prosecution for the massacre of the Comanche tribe and helps pursue Tonto and John.
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