First, get familiar with the unique features of Captain Underpants comics. They often have crazy scenarios and goofy details. Use a loose and sketchy drawing style. Don't be afraid to break the rules and have fun with it!
To draw like Captain Underpants, you need to embrace a lot of exaggeration and creativity. Pay attention to the expressions of the characters and use bright, bold colors. Experiment with different poses and perspectives to make it fun and engaging.