Agencies | People Firstborn Welcomes Tribal, O&M, Groupon Alums By Kiran Aditham on Oct. 3, 2011 - 12:04 PM Firstborn has added a pair of CDs and a copywriter to its creative department as the Dentsu-owned, NYC-based digital shop. Joining up as creative directors are Adam Rubin and Roxana Zegan, who arrive from Groupon and Tribal DDB, r ...