To 1) examine psychotic character-building process in Batman films, 2) compare the differences between psychotic characters in Batman films, and 3) study the relationship between character-building and the social context of Batman films. This is a qualitative research, using content analysis of a total of 7 Batman films. The findings of the research are as follows. In the character-building process of Batman films, each director has to study the characters that appeared in comic books as well as in previous films. He can then use such character traits as foundation for creating his own version of character-building. All directors involved in Batman films obviously have their own style of character-building which differ from one another. The possibility of character-building is limitless, despite the fact that they are taken from the same source. Likewise, different interpretations of the psyche or behavior can lead to invariably different characterization. However, it is essential to preserve the most recognizable traits so as to maintain the uniqueness of that character. When comparing the different versions of the film made in differing periods, the characters are thus found to be quite similar to the original version. The findings also reveal that the social context can influence the interpretation of character-building process, both directly and indirectly.