This research aimed to describe forms of hybridity and mimicry in a novel entitled Sang Raja written by Iksaka Banu. The historical discourse in this novel shows the real life of the Dutch East Indies people, especially the representation of identity formation due to colonialism and orientalism. One impact is the influence of orientalism in the behaviour of social and cultural relations of colonial society. Orientalism creates social stratification in the form of cultural demarcation practices which are opposed by the birth of hybridity and mimicry figures. This is descriptive qualitative research with a post-colonial literary approach. The research data were collected using reading and writing technique, while the validity of the data was checked using theory triangulation. The results showed that hybridity and mimicry appeared in the form of ideas, activities and objects through a process of social interaction. While the forms of hybridity were: (1) Hybridity of ideas: a) Anti-colonialism, b) Equality of Social Degrees, c) Anti-Communism, d) Objective View. (2) Hybridity of activities: a) Working in Indigenes Factories, b) Playing with Indigenes, c) Marrying Indigenes, d) Speaking Malay, e) Consuming Klobot Cigarettes (cigarettes wrapped with dried corn husk). (3) Hybridity of objects: Building Houses in Indigene Villages. While the forms of mimicry were: (1) Mimicry of ideas: a) Acculturation of Knowledge, b) Maintaining Superiority, c) Advertising Strategy. (2) Mimicry of activities: a) Acculturation of Means of Transportation, b) Calling, c) Acculturation of Art. (3) Mimicry of objects: a) Acculturation of Linen Fabric, b) Acculturation of Cigarette, c) Acculturation of Modern Technology, d) Building Architecture, e) Clothing.