This chapter explores how psychometrics reveal hidden traits that shape UNHCR’s organisational culture. Using Schein’s iceberg model as a basis, it discusses how tools like the Myers-Briggs Type Indicator (MBTI) and Hogan Assessments uncover unconscious values, assumptions, and behavioural patterns that influence staff dynamics and leadership styles. The findings indicate an overrepresentation of Guardians and Idealists, with an underrepresentation of Artisans, which may cause procedural rigidity and limited operational flexibility. Hogan data identify derailers such as Dutifulness and Caution, suggesting tendencies towards conformity, risk aversion, and silence in politically sensitive situations. Case examples show how ambition, defensiveness, or overconfidence can weaken principled protection. The chapter concludes by raising questions about how psychometric insights could enhance leadership development, cultural alignment, and ethical decision-making within UNHCR.