This study employs a critical multicultural analysis (CMA) to examine the narratives of underrepresented individuals, with a focus on women and racial minorities, in recent picture-book biographies within the STEM field. The study analyzes 14 books from a collection of 57 published between 2020 and 2022, each featuring underrepresented figures in STEM. Through the lens of CMA, the study scrutinizes how race, gender, and culture are portrayed within the central narrative events. The findings yielded 10 themes: (1) experiences of racial segregation and alienation in youth, (2) simplified early life socioeconomic struggles, (3) support as an exceptional necessity for women, (4) cultural divergence from mainstream culture, (5) highlighting of marital and parental aspects of women only, (6) educational segregation and its impact, (7) cultural and linguistic hurdles in academic migration, (8) cultural bias toward women's STEM careers, (9) modest pride in women's achievements, and (10) cultural foundations of success. This research explores the authenticity of the intricate interconnections of race, gender, and culture as portrayed in contemporary picture-book biographies. The study highlights the importance of narratives that transcend superficial portrayals, probing the deeper complexities that define the lives and contributions of significant STEM figures.