John's brother and fellow Texas Ranger.
Dan's murder drives John's transformation into the masked lawman.
The plot explicitly identifies Dan Reid as John's brother. Dan's death becomes the central reason John pursues Cavendish.
Danny is Dan's son and becomes a hostage in the final pursuit.
The plot refers to Dan's widow and son, and later identifies the captive boy as Dan Jr.; the character list names him Danny.
Dan is the Ranger responsible for bringing Cavendish to justice.
Dan captures Cavendish and transports him toward a hanging before Cavendish's gang rescues him.
Collins's betrayal destroys Dan's Ranger pursuit.
Tonto tells John that Collins betrayed Dan and is working with Cavendish.
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