Measuring 2.5 metres high and 2.3 metres wide, the life-sized Marvel character is the UK's largest Lego model.
The yellow and maroon coloured creation weighs over one tonne, and took a team of six professional builders more than 940 hours to construct. It comprises more than one million Lego bricks.
The model was originally created to celebrate the release of the latest Marvel Avengers movie. It is located at the front of the store, and a The Toy Store spokesperson told Event it will remain in situ until at least the end of June.
Lego created a train made of 500,000 bricks last Christmas. The creation was positioned in London's Covent Garden for three days at the end of November.