Motion retargeting is important in character animation. Different techniques like deep learning, motion graphs, and kinematics are used to transfer motion from one character to another. These techniques help maintain the original motion while adapting it to fit the new character's structure. The goal is to make the process efficient and user-friendly for real-time applications. Challenges include handling complex character deformations and interactions. The research suggests that motion retargeting tools can save time and effort for animators by automating the process and allowing them to focus on creativity.