its wheels. Dave Rose regards this as the most difficult fight of the series. Hypno-Disc was subsequently put through to the Grand Final, where it went up against Chaos 2. Chaos 2 had a fast start, circling Hypno-Disc, getting in a good position for a flip. However, Hypno-Disc seemed to be very sluggish and appeared to have control problems, but Chaos 2 decided not to immediately finish the battle and drove away. Chaos 2 then used its flipper unsuccessfully, bouncing and landing on Hypno-Disc's disc, temporarily stopping the disc. Chaos 2 managed to escape without any damage done, however Hypno-Disc was also able to get its disc up to speed again. However, as Hypno-Disc drove over the flame pit, Chaos 2 was able to drive in again and land the final blow, ironically, getting under Hypno-Disc to flip it over onto its back, and win the title. While Chaos 2 then took on the House robots, the defeated Hypno-Disc machine was dragged into the arena corner by Dead Metal, before cease was finally called. Hypno-Disc won the award for the Most Original Entry that series, which turned out to be the only Robot Wars trophy or award ever given to Hypno-Disc. Series 4 Hypno-Disc returned to the Fourth Wars as the number 2 seed. Since Series 3 the team had changed the size and shape of the teeth on the disc; they were now thicker and were designed to grip hold of whole pieces of armour and tear them off, while the old disc did fairly localised damage to tougher armoured robots. Then, they changed the wheels' colour to white, which was used by later designs of the machine. They also fitted in a self righting-mechanism after the final against Chaos 2. The Rose family (and the new disc) did not disappoint, as their first round melee battle, in the final heat of the series, which saw it go up against The Predator and Raizer Blade, was full of action. To begin with, Hypno-Disc hit The Predator's rear three times, ripping off its armour. Raizer Blade lifted Hypno-Disc, but the heat favourites landed back on its wheels. It hit The Predator again, causing the insides to start to fall out and even the battery. At the end of the fight, only Hypno-Disc was moving, but Raizer Blade was put through as well as it sustained less damage. Hypno-Disc's second round