You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Influencer: Ari Emanuel, William Morris Endeavor Agency Uber-agent Who Brokered Deals for Athletes and Stars Now Has Got His Own Entourage Coming to Mad Ave By Andrew Hampp, Published on January 03, 2011 1 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Register Now Already a member? Log in.