Prone Ruffians (Japanese: バイアス・ラフィアン, Baiasu Rafian) are two story exclusive enemies in Xenoblade Chronicles X. They are Prone troopers, and can be found at level 8 during Chapter 3. They assist Glennar during the boss battle event at the Seaswept Base in Primordia.
One Ruffian carries an assault rifle that inflicts Physical damage, and uses the attacks Shockwave and Shrapnel. The other carries a beam rifle and uses the attack Debilitating Beam.