Will Kendall, Logan or a third party land his valuable allegiance? Tony Maglio | May 5, 2021 @ 11:30 AM Photo by Jacopo Raule/Getty Images for Luisaviaroma Adrien Brody is set to guest on Season 3 of “Succession.” He’ll play Josh Aaronson, a billionaire activist investor who becomes pivotal in the battle for the ownership of Waystar, according to HBO. Might want to pay attention to this one, Kendall (Jeremy Strong) and Logan (Brian Cox). Ambushed by his rebellious son Kendall at the end of Season 2, Logan Roy begins Season 3 in a perilous position, the third-season logline reads. Scrambling to secure familial, political and financial alliances, tensions rise as a bitter corporate battle threatens to turn into a family civil war.