In the era of digital convergence, transmedia storytelling, which expands narratives by intertwining and combining multiple media, is creating a new paradigm for narrative creation. Puss in Boots, who appeared as a supporting role in <Shrek2>, is a character derived from Charles Perrault's The Master Cat or Puss in Boots, and has gained significant popularity among the public. Due to its popularity, Puss in Boots became the main character in <Puss in Boots1>, a spin-off of <Shrek2>. Subsequently, as <Puss in Boots1> achieved success, various transmedia content featuring Puss in Boots as the main character was produced across different media platforms, including mobile games, theatrical animations, OTT animations and interactive animation.
 This article aims to provide a detailed examination of the requirements and characteristics of transmedia storytelling. It also analyzes various instances of transmedia content utilizing the character of Puss in Boots. To scrutinize the transformation of characters' roles and the expansion of narrative structures, which are essential aspects of transmedia storytelling, we apply the 'actantial model' developed by A.J. Greimas to each content. Through this analysis, we can explore how the character of Puss in Boots serves as a pivotal link between transmedia contents and functions as a narrative mechanism. It becomes evident that discovering archetypal and fantasy characters, adapting their roles and personalities, and strategically reintroducing secondary characters while setting up foreshadowing are crucial elements in successful transmedia storytelling. Furthermore, it is essential to create an “integral” story universe that considers various types of connections between content, such as sequels, prequels, spin-offs, and reboots. This should be done while leveraging diversified media platforms that engage users in immersion and participation.