Master Sin

The Alchemist of Crime

Master Sin
Quotation   "I take the long view."
First Appearance   Mongoose #232, 1971
Real Name   Sin Bayan
Identity   Secret ID
Player   NPC
Team Affiliation   Solo
Base Of Operations   Korea
Range Of Operations   Global
Origin   Zenith
Archetype   Calculator


Age   Unknown Nationality   Korean
Height   5' 5" Hair   Black
Weight   125 lbs. Eyes   Brown
Gender   Cis Male Sexuality   Asexual

Master Sin is a master of disguise. His most frequent guises are those of a frail old Korean man in a wheelchair, a handsome young Korean man with long hair, and a middle-aged Korean man with a queue wearing a hanbok.


Brawn 3
Agility 4
Reason 9
Perception 8
Willpower 6
Prowess 5
Accuracy 4

Endurance: 9
Plot Points: 1

Character Points Spent: 70
Unspent Experience: 0


  • Connected
  • Headquarters
  • Linguist
  • Master Plan
  • Minions
  • Wealthy


  • Athletics
  • Combat
  • Computing
  • Culture
  • Deception
  • Engineering
  • Investigation
  • Manipulation
  • Medicine
  • Science
  • Social
  • Survival


Attribute Invulnerability 7
Immortality 5
Immunity 4
(Pathogens, Poisons, Sleep Deprivation, Starvation)
Mind Shield 7
Regeneration 2


  • Light Tactical Vest
    • Invulnerability 1
  • Cell Phone
  • Mini-flashlight
  • Multi-tool


  Base Move     Double Move     All-out Move  
Run   40 feet 80 feet 240 feet (27 mph)
Swim   8 feet 16 feet 48 feet (5 mph)
Jump   9 feet 9 feet 9 feet


Master Sin is a calm, reserved man. He is often lost in thought, and rarely says anything that isn't important. He also has a wry sense of humour, but few people get to know him well enough to see that side of his personality.


  • Control: The character detests the chaos of human society, and seeks to impose order.
  • Responsibility: The character is burdened by the responsibility of their powers.



According to legend, Master Sin was an alchemist and astronomer in the court of Queen Seondeok of Silla during the Three Kingdoms period of Korea. It was during his tenure in the court of Queen Seondeok that Master Sin first discovered the alchemical secret for arresting the aging process, a formula he has continued to refine and perfect. After the end of Queen Seondeok's reign, Master Sin formed the Jade Moon Society, a secret society dedicated to the pursuit of knowledge and the bringing into harmony of humanity and nature.

As the centuries passed, Master Sin's disappointment in humanity increased in proportion to his control of it. By the 12th century, his influence had spread to India and Persia, and by the end of the European colonial era his servants had infiltrated secret societies around the world, all secretly controlled by the Jade Moon Society. Master Sin's ultimate goal is a world in perfect ecological balance, but this fact is withheld from the Jade Moon's subordinate secret societies and their numerous front organizations. Only the fanatically loyal members of the Jade Moon Society itself are aware of this hidden agenda.

Powers and Abilities

Master Sin was born human, but his alchemical formulas and centuries of experience have given him intelligence and wisdom far beyond those he was born with. He has mastered most sciences, and his thirst for knowledge ensures that no realm of human study is long neglected. His experience and keen intellect make him a formidable opponent. Given sufficient information, Master Sin is capable of predicting and preparing for nearly any eventuality. Many members of the Jade Moon Society believe that he can predict the future.

Physically, Master Sin is near the peak of human potential, and his rejuvenating elixir prevents him from aging and allows him to recover from nearly any injury. Despite his lack of more flamboyant abilities, Master Sin is one of the most dangerous people on Earth. His resources and his influence are both virtually unlimited.


Attributes 39 + Skills 0 + Advantages 6 + Powers 25 = 70 / 70