He is tolerable as a child; but he never becomes a man, and might be left out of his own biography altogether but for his usefulness as a stage confidant, a Horatio or "Charles his friend" what they call on the stage a feeder.
There are no more uses of "confidant" in the book.
Show samples from other sources
It all seemed very noble—and frustrating to those involved—until Mark came across an exchange between Mr. Spilker and Ladena Lichliter, who seemed to be his closest confidant, that sent an icy chill along his arms.
James Dashner -- The Kill Order
In the cereal aisle or frozen food section, Gabby couldn’t seem to avoid him, and he became something of a confidant.