William Earl Scott Aukerman has created an alt-comedy empire with his podcast “Comedy Bang! Bang!” Aukerman started the radio show-turned-podcast in 2009, where a discussion between him and a famous guest is interrupted by unhinged improvisors playing wacky characters. But miles away from a radio station’s “morning zoo,” “CBB” has attracted a wide array of daring comedians who often sharpen their skills and feed into the show’s complex comedic lore on their way to starring in Hollywood’s biggest projects, including frequent guests such as Nick Kroll, Ben Schwartz and “SNL” standout Ego Nwodim. The podcast just celebrated 800 episodes and will hit 14 years of production on May 1, and Aukerman is also releasing “Comedy Bang! Bang! The Podcast: The Book” on April 25.