Shieldwall is one of many power-enhancing Mini-Cons scattered across Earth. A member of the Blue Mini-Con Team, when Powerlinxed to a larger Transformer, Shieldwall generates a force field that deflects physical blows and projectile weapons, including missiles. The shield is ineffective against energy weapons, however.
Transformers Playstation 2 Game
Shieldwall's Mini-Con storage panel was discovered on a high ledge in the deep Amazon. Following the defeat of Megatron, he and the other Mini-Cons returned to Cybertron and helped form the Matrix Cannon, Nemesis Shield and Vanguard Booster, giving the Autobots the power needed to destroy Unicron.