10 Things You Need to Know About JJ from Dennis and Gnasher Unleashed! Everything you need to know about Beantown's resident daredevil and star of Dennis and Gnasher Unleashed – JJ! 🤣 Beano Video Team Last Updated: February 5th 2018 1. JJ is fearless and strong! 2. She's 10 and goes to Bash Street School! 3. She's the drummer in Beano’s coolest band! 4. She loves riding her BMX! 5. She's really fast and loves doing freestyle stunts on it! 6. In fact, she’s good at all sports! 7. JJ runs a secret shop at school and sells pranks to her classmates! 8. She thinks she wants to be a PE teacher when she’s older! 9. Or an explorer! 10. Her motto is ‘Give it your all!’ Find out more about your favourite Beanotown characters here and get to know JJ.