I will break down and tell the type of Bruce Wayne (Batman) from the Snyderverse, played by Ben Affleck. First I will tell what his primary attitude is, then what his superior function is, then his supporting function, then the dominant function formed by joining primary attitude and superior function, then the auxiliary function similarly. And also other functions will be explained if they seem necessary. After that, I will finally refute for other types that people often argue about. Starting with the attitude, Bruce leans towards introversion than introversion than extroversion. Introversion is Jungian primitive which is about flow of libido or conscious attention to internal self than the external world. While extroversion is about libido flowing outward to world and trying to adjust with its conditions. Bruce is continuously shown as someone who internally processes past, guilt, fears, moral codes, loyalty, and even understanding of the world. He does engage with the external world definitely to fight against crime and establish order but his ultimate motivation, drive, and shelter comes from his internal self. Extroversion whereas is adjustment to external world and having an objective view in perception or judgment, depending on which one is the superior or dominant function. For the superior function, in my opinion the sensing function comes as the superior function. The reason is that his natural orientation remains primarily towards trust from sensory factors. For example, strong perception to compare present with past, taking decisions based on how his own past sensory experiences has been, his understanding is result of accumulation of personal experiences, and he doesn't change his mind if his experiences tell him about something. I will expand this part with example when I combine attitude and superior function to explain dominant cognitive function. In contrast, he isn't an intuitive type for taking decisions as per how his experiences has been, and not as per what potentials or implementations he perceives. Perceiving Superman wiping out human race wasn't intuition, and I will prove it when explaining dominant function. And for the supporting function it comes closest to thinking function. Because the superior/dominant function keeps a person locked and spiraling, until it is balanced and made applicable with the its opposite type of function (judgment for perception and vice-versa). He constantly engages in studying situations, developing plans, organizing logic, tracking criminals like human traffickers, terrorists, and even entities with demigod-level powers like Superman with logical execution. In contrast, feeling function is about labelling of contents of consciousness as per abstract valuation which aren't mathematically true, whether subjective or objective. When we combine primary attitude of introversion and the superior function of sensing, we get introverted sensing (Si) as the dominant function. This function deals with subjective sensation, which is storing an internal database of sensory experiences and comparing how their new sensory perceptions compare to their past experiences. This is what we see in Bruce, where his perceptions drive him to do and decide, not deduction or induction of logic or values. He deemed criminals as not worthy of living and killed them, which are also drawn from his experience of brutal murder of his parents in the very same city he serves. And that drives him to do what he does. As promised, many might call perceiving Superman as a future threat to human race is intuition. But it was actually introverted sensing, and I will explain why. He took it as an absolute certainty and seriously because he felt very same as he felt as a kid when his parents were murdered as Alfred puts after heated argument with Bruce, "That fear, that rage, that powerlessness that turns good men cruel" referring to how far Bruce was going with the matter because of his subjective experience. Fear and rage are related directly to internal sensation of certain neurochemical releases like adrenaline for example, as a matter of fact. Then auxiliary extroverted thinking, very much telling from how he organizes external world with logistical arrangement, gathering, objective proof, data about criminals, continuous research on efficient tactics, and focus on external execution over internal consistency as introverted thinkers would care deeply about. This function (extroverted thinking) makes his subjective worldview through introverted sensing applicable using external logic. And the inferior function as extroverted intuition complements his introverted sensing. In fact the perception of Superman as a threat is partly his dominant introverted sensing and partly for his inferior extroverted intuition which appeared childish for seeing a crude potential for dominance of sensing. Inferior functions are mostly suppressed and come up intensely when bottled up for too long, for a brief period. Most typing of Batman is that of as INTJ, ISTP, or sometimes ENTJ. For INTJ, his dominant function becomes introverted intuition which is subjective perception of images from a priori. But he didn't seem to be primarily concerned with abstract ideas that his consciousness catches from what he perceives. He is mostly in touch with his experiences and past instead of abstraction, pretty much grounded in concrete reality that can be directly perceived through raw senses. He doesn't give time understanding underlying meaning of something, instead he is concrete with details throughout the movies. For ISTP, an introverted thinking function implies internal organization of logical concepts for consistency, whereas we see him constantly organizing the outside world for practical execution and getting results. That negates any introverted thinking type altogether, including ISTP. For ENTJ, extroverted thinking first means logical organization in external world is first priority and source of trust, along with balanced perspective from introverted intuition. Whereas his core of character is made from his experiences, his subjective understanding, bias, dwelling on past, and growth through expansion of those experiences over adjustment to external trends for the sake of it. That means he is not having an extroverted attitude primarily.