While I was making textures on the characters, I paid attention to the experience. I preferred materials consisting of mold and damage instead of very beautiful metallic materials. So I could create the impression that the characters had participated in races before and had a daily life in them. Another thing I paid attention to was that the characters included color combinations according to their personality. Since CAT is a more cool and calm character, I used a maximum of 3 color combinations. In addition, I decided to use yellow tones, which were preferred in construction equipment, as CAT's ancestors were heavy construction equipment. Because Hector egoism represents selfishness and ambition, I used the color red to cover the majority. Also, because Hector has a very active personality, I made light pieces on most parts of his body. While CAT's materials were deformed and moldy, I deformed Hector's materials with just dirt and scratches. So I will make the audience understand that Hector had not suffered any heavy damage in the past.