The collective name used for the investors on the British programme Dragon's Den is the Dragons.
The title describes the role played by the panel: each investor is presented as a formidable businessperson who can challenge an entrepreneur’s claims and decide whether to commit personal capital. During a pitch, the Dragons question sales, costs, margins, ownership and growth plans.
Different versions of the international format use different animal names. The American adaptation Shark Tank calls its investors sharks, while the Japanese source programme Money Tigers uses tigers in its title. Those labels are related to the format but are not the name used by the British series.
The term also appears in the programme’s branding and in the language used by presenters and contestants. It refers to the investors collectively, not to a separate group of presenters, producers or advisers.