I just completed the side story with Looker in Pokemon Y. He was a good character. When he was first introduced in Platinum, he was just a character I never thought would come back. I liked that he gave me a glass flute, an obvious reference to Hoenn. Then he appeared in pokemon Black, doing his job. He still seemed a little flat, no real interaction with him. That changed with X and Y. He developed more as a character. I felt bad when I learned his croagunk was dead. He made you a partner in his investigations, and I became his friend. In his parting letter, before meeting him at the cafe one last time, he said something that really touched me. He gave me his code name. The code name "Looker" is what he has used through out the series. He just gave it to me, and I fear he will not return. He may, with a new code name, but will it be the same? Probably.