Adrian Randolph Crump III, known as Shuuzou Ootaki in the Japanese version, is a member of the Big Five.
He was formerly a KaibaCorp accountant and chief financial officer of KaibaCorp who oversaw the company' finances (human resources in the japanese version).
Crump was an only child. His parents had no time for him since the worked late in the Japanese version they also used to argue continuously), so he spent most of his time counting things, resulting in his love for numbers. When he found a book about how penguins cared for their younglings, he became obsessed with penguins and eventually dreamed to build a penguin theme park that would combine his love of numbers and penguins.
Content compiled by AnimeList.moe from publicly available sources.