James Mackreides, also known by those close to him as "Mac", is one of the main protagonists in the Meg Saga. He is the best friend of main protagonist Jonas Taylor and godfather of David and Danielle Taylor. He is known to be short tempered and can get both himself and his best friend into trouble. He is also known to have been an alchoholic. He was once a helicopter pilot in the Vietnam War. He is one of the characters to appear in all books in the saga so far.
Not much is known about James's early life, but it is known that on the day of his tenth birthday, his father committed suicide, and that he participated during the Vietnam War. He first met Jonas Taylor in a rehabilitation center.