Minnie the Minx Dennis' house by Roger who had gained a copy of the Treasure Map due to Smiffy, the dipsy member of The Bash Street Kids, leaving the original in the photocopier machine in Beanotown Library. Upon finding out The Bash Street Kids were also hunting for the treasure, the trio followed them to London. Once the mystery had unfolded that the treasure was buried deep in the Millennium Dome and the Bash Street Kids instantly found it and celebrated their victory. However, Dennis attempts to intimidate the treasure off of Fatty but it quickly flattened leaving Minnie and Roger to chase
Dennis the Menace and Gnasher Bea was as much of a menace as her older brother and even gained her own spin-off strip, which Dennis would sometimes cameo in. Dennis kicked off the new millennium with a strip of him charging 50 pence to access the Menace Dome, a more 'menacing' version of the Millennium Dome. He also starred as a villain in a feature length Bash Street Kids strip in which he, alongside Minnie the Minx and Roger the Dodger, raced against the Bash Street Kids to find the treasure which was apparently buried underneath the Millennium Dome. It ended with Danny, the Bash