The Right Foreleg, as with the Left Foreleg and Long Gui itself, is vulnerable to Thunder-based attacks. At times, the Long Gui may use its Right Foreleg to execute the Stomp technique, which deals large damage to all party members who are on the ground.
As with the Left Foreleg, when it comes to depleting the Right Foreleg's HP, the party need only use the Relentless Assault paradigm (COM/RAV/RAV). It is recommended that the party leader serves as the Commando; one must use physical attacks to start filling the Right Foreleg's chain gauge, while Thunder-based attacks from the two Ravagers in the party will ensure that the rest of the gauge fills swiftly. The process of filling the Right Foreleg's chain gauge can be further hastened through the use of Tri-disaster (RAV/RAV/RAV), but in the end, a combination of physical attacks and Thunder magic is all that is needed to conquer this foe.