Here is a profile for Victor Mansfield, in the format of the Official Handbook of the Marvel Universe:

Name: Victor Mansfield

Identity/Class: Human

Occupation: Master thief, mentor

Group Membership: None

Affiliations: Li Ann Tsei (former protégé), Mac Ramsey (former protégé)

Enemies: Various law enforcement agencies, competing thieves and criminal organizations

Known Relatives: None

Aliases: "The King of Thieves"

Base of Operations: Various locations around the world

First Appearance: Once a Thief (1996)

Powers/Abilities: Victor Mansfield is a highly skilled thief and mastermind, considered one of the greatest thieves of all time. He possesses an unparalleled knowledge of the criminal underworld and is a master of deception and infiltration. He is also an expert in martial arts and hand-to-hand combat, and is capable of taking on multiple opponents at once.

History: Victor Mansfield was once considered the "King of Thieves," renowned for his skill and expertise in the art of thievery. He took on a number of protégés over the years, including Li Ann Tsei and Mac Ramsey, whom he trained in the finer points of thievery and criminal strategy.

Despite his reputation as a master thief, Mansfield was eventually apprehended by law enforcement and sentenced to a lengthy prison term. However, he managed to escape and went into hiding, continuing to pull off daring heists and stay one step ahead of the authorities.

Mansfield's ultimate fate is unknown, although it is rumored that he died while attempting a particularly risky heist in his later years.

Personality: Victor Mansfield is a highly intelligent and strategic thinker, always able to stay several steps ahead of his enemies. He is a charismatic and confident individual who exudes an air of authority and expertise. Despite his criminal activities, he maintains a certain code of honor and prefers to avoid violence whenever possible. However, he is not above resorting to more extreme measures when necessary.