In 2011, Zebrowski, alongside Marcus Parks and Ben Kissel, started the horror/comedy podcast, The Last Podcast on the Left, hosted by Cave Comedy Radio. Zebrowski has also featured on many other Cave Comedy podcasts. The trio later began The Last Stream on the Left on Adult Swim in 2016. Zebrowski is known for his voice impressions on the podcast, one of his most notable being his original character Detective Popcorn.