A Guise is a false manner or behaviour.
I adopt a guise or a different manner to gain advantage for my Self.
A guise is designed to make myself better than I am.
It is designed to make my appearance better than it is.
It is based on a belief that by adopting a better persona, I become a better person.
A Disguise is a false appearance.
I adopt a disguise to hide the fact of my presence.
A disguise is designed to hide me from being recognised as my Self.
A guise is designed to increase my fame or infamy, whereas a disguise is designed to hide it.
The Interrogator adopts a guise to appear more important.
The Aloof adopts a disguise to become unapparent.
Neither a guise nor a disguise is a true representation of who I really am.