Returning as reigning champion, Roadblock took part in the seventh heat of "Robot Wars" series 2. Its armour for this series was upgraded from steel to aluminium, reducing its overall weight to 80.9 kilograms. In the Gauntlet, Roadblock was the first ever contestant robot to tackle the Sentinel obstacle: a swinging robotic arm formed from a modified backhoe digger. Although briefly pinned against the arena wall, Roadblock was able to pass the Sentinel and reach the end zone to qualify for the Trial. This second phase of the heat saw Roadblock knock down 34 barrels in a robotic version of skittles - just sufficient to reach the one-on-one battles. Herein, it pushed an immobile Killerhurtz into the midst of the house robots before victory in the heat final over Onslaught, which failed to move.