Bao-Dur's energy-arm.
The energy-arm of Bao-Dur, also referred to as a repulsor fist or more precisely a repulsor arm, served as a replacement for the left arm he lost at Malachor during the Mandalorian Wars. Cyan-colored energy moved from the upper to the lower section of this prosthetic. Its great strength allowed it to penetrate force fields, and it occasionally released accumulated energy upon striking an opponent, functioning similarly to an integrated energy baton.
Within the game, Bao-Dur's energy arm has the capability to dismantle personal energy shields used by enemies during combat. As he advances in levels, he unlocks new abilities that enhance this function. However, it's important to note that this is not a continuous passive ability; it must be activated like any other special attack during battles. Furthermore, a separate set of abilities governs the additional damage inflicted by his arm in unarmed combat. Uniquely, when combined with the unarmed combat skill gained from Jedi training, he achieves higher damage bonuses in unarmed combat compared to any other character.