Although Adult Swim sadly canceled it, The Venture Bros. was thankfully given the chance to end properly. Instead of an eighth season, The Venture Bros. got a feature-length finale in Radiant Is the Blood of the Baboon Heart. The movie was well-received by critics, and especially by fans of the cult favorite. In fact, the movie left fans wanting and hoping for more even if it was as concrete a finale could be.
Source：https://www.cbr.com/the-venture-bros-series-movie-ending/
