humanoid obsessive has built an incredibly realistic female robot from scratch - and it's got more than a passing resemblance to Avengers star Scarlett Johansson.

Ricky Ma, a 42-year-old product and graphic designer, has spent more than $50,000 (£34,000) and a year and a half creating the female robot prototype, Mark 1.

The designer confirmed the scarily lifelike humanoid had been modelled on a Hollywood star, but wanted to keep her name under wraps.

It responds to a set of programmed verbal commands spoken into a microphone and has moving facial expressions, but Ricky says creating it wasn't easy.

He said he was not aware of anyone else in Hong Kong building humanoid robots as a hobby and that few in the city understood his ambition.

Ricky said: "When I was a child, I liked robots. Why? Because I liked watching animation. All children loved it. There were Transformers, cartoons about robots fighting each other and games about robots.