1. The 1st Competitor: The Alien, a living weapon noted for its ferocity and deadliness in any condition, which (according to wikipedia):
is about eight feet in height (2.4 meters),
lacks visible eyes, uses echolocation to "see" its environment,
has strong, sharp claws and a blade-tipped tail,
possesses great physical strength and agility, can run along ceilings and walls,
has a kind of blood which is an extremely potent "Molecular Acid" and is capable of dissolving on contact almost any substance with alarming speed,
has the ability to spit this acid,
tends to be silent in its movement,
does not radiate heat,
is extremely aggressive and persistent, while being totally devoid of fear,
is considered 'fast learning', quickly understanding cause and effect,
has 2 mouths, one inside another, the jaws of the 2nd mouth are rigid enough to penetrate bone or body armor.
2. The 2nd Competitor: SWORD DEMON Dugu Qiubai, a super swordsmanship who eagerly sought for a loss throughout his lifetime but failed!
Weapon: the Black Iron Heavy Sword, which is virtually indestructible!
Fighting technique: the Dugu Nine Sword Art, which is described to be able to block thousands of projectiles in the twinkling of an eye + invincible no matter who/which the opponent is!
Dugu will kill the Alien or his corpse + his sword will be disintegrated by the Molecular Acid?