Theo Paphitis joined Dragon's Den as a dragon in the programme's second series.
Paphitis is a British retail entrepreneur best known for building businesses in sectors including stationery, retail and lingerie. His commercial background shaped the practical, sales-focused questioning he brought to the pitch room.
He joined after the programme's first series, becoming part of the changing investor lineup that followed the original panel. Dragon's Den regularly refreshes its cast, so the series number is an important part of this identification.
Theo Paphitis is sometimes confused with later female investors such as Deborah Meaden, Kelly Hoppen or Sara Davies. Those investors joined the programme in different periods and are not the answer to the second-series question.