Abstract
<jats:p>This article examines the problem of adapting a two-dimensional (2D) animated character design to a three-dimensional (3D) animation environment, which arises from the rapid development of digital technologies and the increasing prevalence of hybrid animation techniques. The relevance of the study lies in the need to preserve the artistic expressiveness and visual identity of a character when transitioning from a flat, stylized representation to a volumetric spatial model, a process that involves both technical and aesthetic challenges. The paper analyzes classical and contemporary research in animation theory and computer graphics, including the principles formulated by Thomas, Johnston, and Lasseter, as well as studies on modeling, deformation, and character stylization. It is established that classical animation principles remain fundamental for achieving believable motion in a 3D environment. The aim of the article is to identify the key principles and methods of adapting a 2D character into 3D animation while maintaining its stylistic integrity. The study systematizes core adaptation principles, including stylistic interpretation, morphological transformation, deformation stability, and animation expressiveness. Contemporary examples, including the video game Fortnite and the film “Spider-Man: Into the Spider-Verse,” are analyzed, demonstrating the effectiveness of non-photorealistic rendering and stylization techniques. The practical part confirms that character adaptation is a complex process requiring the integration of artistic and technical approaches. The study concludes that effective adaptation is achievable only through preserving the visual identity of the character while transforming it within a three-dimensional environment.</jats:p>