Doctrines created and evolved over time, sometimes changing
Founders
Known for their extreme desire for wealth
Known for telling stories and lies
Convicted and imprisoned for illegal activities
Died during their trouble with the law
Legal troubles
Involved in many illegal activities, in many cases as part of official organization doctrine and practices
Support destruction of outsiders, especially apostates (blood atonement, shunning, "fair game")
Legal troubles led to changes in doctrine (at least on the surface, note polygamy and "fair game")
Teachings
Pre- and post-mortal existence
Eternal progression (godhood, clear thetan)
Only way to know truth is to experience it yourself
Christianity, Bible only partly true
Focus on thriving and happiness in present life rather than the afterlife or eternal life
"Salvation" by works
Give "milk" instead of "meat"
Official endorsement of lying about or avoiding discussion of controversial doctrines, especially origin of man and key figures (Heavenly Father, Xenu, spirit children, thetans, etc)
Levels can be achieved (Operating Thetan levels, temple Mormons, eternal progression, different kingdoms)
Resistance is dismissed as proof/evidence of validity
Behavior
Persecution complex
Label and treat opposition as evil enemies ("Antis", "Suppressive Persons")