I thought the dislike of Stanley for Charlie was obvious. Stanley considers himself on a holy mission, a quest to collect all arkentools. A lot of Stanley's confidence comes from the fact that
he is attuned to his artifact, and others like Ansom are not. The fact that Charley is also attuned to his artifact doubts that Stanley is the chosen servant of the titans. I don't think the Tool wants to even acknowledge the existence of Charley. Admitting that he needs Charley would mean that Charley is stronger and has the favor of the titans more than Stanley.