Jakob Nielsen explains the usability testing process through comic strips, offering three versions that cater to different audiences: a standard comic, an elaborate storyboard, and a children’s comic featuring animal characters. Each version illustrates the same 12-step process, which he recommends for app, website, and physical product design. While some steps can be adjusted depending on the project, he advises teams new to user research to adhere closely to the full process. The first comic uses a straightforward style, while the second employs a more detailed airbrush technique. Nielsen faced challenges with character consistency, especially with a key character, Karim, who didn’t appear consistently throughout the panels. The final comic simplifies the narrative with fewer characters and a humorous twist suitable for children. Each comic aims to make the usability testing process more relatable and easier to understand, showcasing Nielsen's commitment to effective communication in design.