Johanna is a young superhero with a calm demeanor and a strong sense of responsibility. With long, curly purple hair tied into a high bun, she sports a distinctive white visor, a pink-and-black striped shirt, a white apron, and ripped black leggings paired with black-and-white sneakers. As a waitress at her mother's diner, Mo's Oasis, she demonstrates a pragmatic and thoughtful approach to life. Her leadership skills emerge as she balances her role as a 'sister figure' to Kid and Rosa.