Jeremy Larner was Rob Dyrdek's manager, and left Fantasy Factory after 13 episodes from 2009-2010. No reason was publicized at the time of his exit. Larner appeared in seasons 1 through 3 of the show.
Larner is the CEO of JKL Worldwide, which managed affairs for Dyrdek's shows Rob & Big, Fantasy Factory, Wild Grinders, and Ridiculousness.
In 2008, Dyrdek associate Christopher Boykin was sued by JKL Associates for a minimum $16,750 for amounts JKL was allegedly owed for helping Boykin get a raise in the thousands, a large commission check, and a $25K bonus.
Sadly, the sixth and final season of Rob Dyrdek's Fantasy Factory recently ended.
The best way to keep track of Jeremy Larner in the business world is via LinkedIn. You can check out his professional profile here.