The YouTube star is leaving his popular show after five years and more than 400 episodes.
With several of YouTube's biggest channels on its roster, Maker no longer wants to rely on Google for revenue.
PewDiePie acquired 1,635,269 subscribers last month, averaging out to one new subscriber every 1.6 seconds.
Zappin contends he was wrong forced out of the company, while current Maker execs claim he left on his own.
FX has reportedly committed to “a comedy inspired by the life of the internet star.”
The popular YouTube vlogger implied on Twitter that the lawsuit will concern ownership of his Google AdSense account.