On the Season 2 finale episode of Splitting Up Together, “Welcome Home,” young Milo (Sander Thomas) complains about his maternal grandfather Henry (Geoff Pierson) not being interested in participating in Grandparents Day at school. So his mother, Lena, (Jenna Fischer) urges Martin (Oliver Hudson) to reconnect with his estranged and adventurous father, Brock.
The Indiana Jones-esque character is portrayed by Ron Perlman. The veteran actor is known for his roles on Hand of God (Pernell Harris), Sons of Anarchy (Clay Morrow), Beauty and the Beast (Vincent), and in a variety of films including Hellboy (Hellboy), Conan the Barbarian (Corin), The Job (Jim), and Alien: Resurrection (Johner), among others. Splitting Up Together airs Tuesdays at 9:30 pm on ABC, right after The Kids Are Alright.