The actor famously "photobombed" the red carpet at the Oscars earlier this year when he hijacked other stars' picture opportunities by sneaking into their shots.
The 38-year-old popped along to the London attraction to allow the sculptors and technicians to take dozens of measurements and photographs for his likeness which will make its debut in October.
He said: "What a weird and wonderful compliment to be included in the ranks of talent already committed to wax. I've been accused of being wooden in my work but never waxy.
"The main privilege for me was the process and seeing the amount of exacting work and skill brought to every detail of this art form. It is a wonderful combination of old and new, high-tech and lo-fi skills. Measurements, hand inserted individual hairs and sculpted features.
"It's an extraordinary experience. Also my agents will be thrilled, they've wanted a clone of me for some time," he added.
The figure will be placed in the A-list section of the attraction - which is just a stone's throw from Sherlock Holmes' residence at 221b Baker Street - alongside figures such as Dame Judi Dench, Kate Winslet, Brad Pitt and Johnny Depp.
His figure will be dressed for the red carpet in a stylish dark suit.
Ben Sweet, the general manager at Madame Tussauds London, said: "Our guests made it very clear they wanted to see him in the attraction, and we can't wait for them to meet his figure later this year."