Rob Law invented the Trunki ride-on suitcase featured on the UK programme Dragons' Den.
Law developed Trunki as a child-friendly piece of luggage that children could ride on while travelling. The product was based on the idea that a suitcase could be both practical storage and a way to make journeys easier for families. It became associated with Law after he presented it to the Dragons.
The television appearance is notable because the Dragons did not invest. Despite that outcome, Law continued to develop and market Trunki, and the product became a major example of a business that grew without a Dragons' Den deal.
The name Trunki refers to the product, not its inventor. Rob Law is the specific answer because he designed and developed the ride-on suitcase and founded the company behind it.