Based on Humboldt's writings, after he was hired by the Dutch to find a new place to sell weed, he began a jorney that, on September 4, 1609, culminated on him steering his ship into the mouth of a river "coincidentally" named the Humboldt by the local natives, although this is most likely a lie to justify his naming of the river after himself. Later, he would became the establisher of the New Rotterdam colony. His story is told on the CNT show A History of Liberty City.
- Humboldt is based on Henry Hudson, and his name is a possible reference to Alexander von Humboldt, a German naturalist and explorer after whom many geographical features were named.
- He is the oldest known character in the whole Grand Theft Auto universe.