An uber whose difficulty is unrivalled by anything else in Star Sonata, this fearsome entity is capable of destroying entire squads without a scratch. When it spawns, the UrQa'qa Qu'ishi roams Perilous Perilous Space and announces its presence, a direct challenge to those who wish to best it and attain a piece of its gear.
The UrQa'qa Qu'ishi multifires three splashing heat beams, dealing about 300k damage each. Any players too close to its seemingly random target will be instantly killed or badly hurt by these beams, making it extremely difficult to organise the large squads needed to destroy it. As it takes more damage, the UrQa'qa Qu'ishi starts to use alternate forms of dealing with would-be attackers, launching 20 fighters and firing pulse guns that can 1-shot even the most resilient of berserkers. When it is reduced to below 50% shields, missiles are launched toward random targets, easily killing those without high resistances and shields. As an added difficulty, tractors enrage it, making it impossible to use tractors to keep it in place.
In addition to being a roamer, a DG version exists, in a random Perilous Perilous Space galaxy.