Blondie (comic strip) was adapted into a long-running series of 28 low-budget theatrical B-features, produced by Columbia Pictures. Beginning with "Blondie" in 1938, the series lasted 12 years, through "Beware of Blondie" (1950). The two major roles were Penny Singleton as Blondie and Arthur Lake (whose first starring role was another comic strip character, Harold Teen) as Dagwood. Faithfulness to the comic strip was a major concern of the creators of the series. Little touches were added that were iconic to the strip, like the appearance of Dagwood's famous sandwiches—and the running gag of Dagwood colliding with the mailman amid a flurry of
What a Cartoon! intervention: for example, even the music would be an individually crafted score. Each ""Looney Tunes" length" (7 minutes) short would debut, by itself, as a stand-alone cartoon on Cartoon Network. Seibert explained the project's goal in a 2007 blog post: "We didn’t care what the sitcom trends were, what Nickelodeon was doing, what the sales departments wanted. [...] We wanted cartoons." The "What a Cartoon!" staff had creators from Europe (Bruno Bozzetto), Asia (Achiu So), and the United States (Jerry Reynolds and colleague Seth MacFarlane). The crew also contained young series first timers (like Genndy Tartakovsky, Craig McCracken, Rob Renzetti,