desperado: a desperate or reckless person, especially a criminal.
degenerate: an immoral or corrupt person.
rogue: a dishonest or unprincipled man.
scoundrel: a dishonest or unscrupulous person; a rogue.
fugitive: a person who has escaped from a place or is in hiding, especially to avoid arrest or persecution. Actually fugitive may not be a villain and in the movie “Fugitive”, Harrison Ford played the innocent doctor who’s wrongly accused of killing his wife.
outlaw: a person who has broken the law, especially one who remains at large or is a fugitive.
philanderer: a person readily enters casual relationships
debauchee: a person given to excessive indulgence
apostate: a person who renounces a religious or political belief or principle
renegade: a person who deserts and betrays an organization, country, or set of principles.
charlatan: a person falsely claiming to have a special knowledge or skill; a fraud
grifter: a person who engages in petty or small-scale swindling
grafter; a form of political corruption, being the unscrupulous use of a politician’s authority for personal gain
racketeer: a person who engages in dishonest and fraudulent business dealings. This word is often used on people related with organized crime families in movies like “The Godfather” or shows like “The Sopranos”.
con man: a man who cheats or tricks someone by gaining their trust and persuading them to believe something that is not true.