In a four-book series I'm planning, one of the main characters (there are five of them, but he has probably the second-largest role) is seen as pretty much perfect by most of the other characters. In the first book, he's mainly seen through the first main character's point of view, and he's absent for the majority of the second book except for memories and such. As a result, it isn't really until the third book--which is mainly from his perspective--that any real major flaws are revealed. However, for a reader who wouldn't know about these character flaws ahead of time, would he be considered a boring, "Gary-Stu" type character for the first half of the series? Would it be beneficial to hint at some of these flaws during the small sections of the first book that are from his perspective, even though they won't be explained in detail until later?