Character Design and Visual Development for LINE Stickers: ‘Yoga Teacher’

Abstract

 This study explores the character design process for LINE stickers by developing a character named “Yoga Teacher,” targeting female yoga practitioners aged 20–40. The objective is to create a character that functions as an emotional and expressive representative for users in a messenger application, LINE. The research applies key theoretical frameworks, including character design principles, Super Deformed (SD) proportion, color theory, and user-centered design through the creation of a persona. The design process is structured into three main stages: research and development, finalized visual design, and production. Using freehand vector illustration on iPad applications, a set of 40 LINE stickers was created, incorporating a range of expressions, gestures, and short messages reflecting the personality of a modern yoga enthusiast. Following the production stage, user feedback was collected from 30 participants through questionnaires. The results indicate that 93.3% of respondents understood the communication of the character, while 90.0% found the character’s appearance appropriate for representing yoga practitioners. These results confirm the effectiveness of integrating theoretical frameworks with a well-defined persona in enhancing emotional connection and clarity in visual communication. The sticker set was later published on the LINE Creators Market and selected for exhibition at the ADA 2022 International Exhibition of Art, Design, and Architecture, underscoring its potential for further development in commercial creative industries.