Aston Machan is a unique Uma Musume character from Umamusume: Pretty Derby with a distinctive personality centered around her dream of becoming a world-class mascot. Unlike typical mascots, she aspires to be a 'super mascot' and even an 'ultra super mascot' that would appear in various places and touch many people's hearts. She has a laid-back, at-her-own-pace personality and is obsessed with being on camera, constantly appearing from corners of the screen to capture her image. She pursues her goals through various creative methods including filmmaking, recording voice memos, and making miniature Ma-chan dolls. Aston Machan is based on a female racehorse (mare) and is canonically dormmates with North Flight at Tracen Academy. Both characters share similar physical characteristics including short bob-style hair and petite builds. Her unwavering determination and creative approach to self-promotion define her character arc.