It is based on a collection of papers presented at the 12th International Conference on Robot Intelligence Technology and Applications (RiTA), held at Ulsan National Institute of Science & Technology (UNIST), Ulsan, Korea. The conference, with the main theme "Generative Thinking, Generative Action," was held from December 4 to 7, 2024. For better readability, the 34 papers are grouped into three chapters: Chapter I: Perception and Learning; Chapter II: Planning and Control; and Chapter III: Interaction and Applications.