Augustus met Theodora in the Port and came to the Castle for a better life. One day, when the Bridge Boy was injured, Gringe helped out. It was not long when he was asked to be the North Gate-Keeper. They have two children, Lucy and Rupert Gringe. He enjoyed playing Counter-Feet and disliked the Heaps until they made up a long-standing feud. Gringe accompanied Silas Heap when he unsealed the attic.
Despite his rough air, Gringe is in fact a kind father just wanting the best for his children and family.
He wears a leather jerkin.