Glenn Pennycook was born in Auckland, New Zealand. His achievements include solo climbs of large mountain faces, such as the Caroline Face of Aoraki Mount Cook, in the depths of winter. He holds a Master's degree in Astrophysics. He is a father and step-father. He spends his free time working on a portfolio of paintings, playing football, lifting weights, and pondering problems of fundamental physics. He has taught sciences, sports, and mountaineering. He is an expert on confident body language, speech and behaviours and advises organisations and individuals on how to project strength and certainty in high-pressure negotiations.