When it comes to adult cartoons and superhero shows, The Venture Bros. (created by Jackson Publick and Doc Hammer) has one of the biggest and most creative cast of superheroes, supervillains, and civilians ever seen. As such, every character had a unique voice and manner of speaking. It's because of the characters' distinct voices and word choices that it was easy to mistakenly think that the highly-acclaimed Adult Swim superhero satire hired more voice actors than it really did.
Source：https://www.cbr.com/the-venture-bros-cast-character-and-season-guide/
