Hans is probably high on the psychopath scale, and if you do any reading about psychopaths, the main takeaway is that you can never believe what they are saying. From Google:
What is a psychopathic person?
Psychopathy is a severe personality disorder characterized by interpersonal deceptiveness and calloused, remorseless use of others, as well as behavioral recklessness, impulsivity, and overt antisocial behavior (e.g., aggression, violence). From: Encyclopedia of Mental Health (Third Edition), 2023.
What is a psychopathic person?
Psychopathy is a severe personality disorder characterized by interpersonal deceptiveness and calloused, remorseless use of others, as well as behavioral recklessness, impulsivity, and overt antisocial behavior (e.g., aggression, violence). From: Encyclopedia of Mental Health (Third Edition), 2023.