The BBC television series that uses a fictional den where entrepreneurs pitch businesses to wealthy investors called Dragons is Dragons' Den.
The British series presents founders seeking investment for their companies. Each pitch takes place before a panel of investors, who question the entrepreneur and may offer money in exchange for a percentage of the business.
The title is a metaphor for the pressure of the meeting rather than a reference to fantasy fiction. The “den” is a television setting, and the “Dragons” are businesspeople rather than mythical creatures.
The programme is based on an international format that originated in Japan. Its British version has become especially recognisable for direct questions about sales, profit, valuation and ownership. These practical details distinguish it from talent competitions or workplace programmes that also feature business-related tasks.