Quick Definition: A crew of PUAs based out of the LA/orange county area that supports yearly seminars and speak talks for the purposes of bringing seduction knowledge together. They are known for their yearly events which they sometimes charge for.
Originally started by a few guys in southern California, the Casanova Crew began as a weekly session where guys can hangout and wing each other going out. Over the years, the crew developed into a bigger forum and now hosts Pick Up Artists from all over the world.
Here is an example of Arash giving a talk at one of their hosted events: