River Residents

Feral Children

 * Can be found at a Camp
 * Talk to them to get a free Snare or a free Arrow

Helen Cockrow

 * Can be found at a Farmstead
 * Talk to her for a free Spear Trap

Cocteau

 * Can be found at a Church
 * Talk to him for a free Wolf Hide Jacket

Magnolia

 * Found at a Filling Station
 * Talk to her to get your hunger bar filled or be cured of all afflictions

Flimflam

 * Found at High Ground
 * Talk to him to see what he has available for trade
 * Talk to him after activating the relay for a final trade "opportunity"

Quincy Collie

 * Encountered at Angel Yard in Campaign Mode
 * Encountered at ? in Endless Mode
 * Talk to him before and after reading the note at the bear den