Boss Sibelonit are the four times stronger version of the regular Sibelonit. Being four times stronger in damage, shields, hp, and rewards, they are aggresive to the passing players and attack on-sight. Also having different graphics than the Sibelonit, you can tell the difference usually easy. Often encountered with a swarm of Sibelonit, Boss Sibelonit are to be dealt with caution. Encountering Lordakia assisting the Sibelonit is normal as well.