Patrik Elgh started as Bolibompadrake in 2014 and has been involved in developing the dragon's costume.
One of the secrets behind the success is that there are cameras in the eyes, so that the actor can see what is happening at the dragon's eye level via a screen inside the dragon's head.
- In other suits you often have to look out through the mouth or nose, but then you only see the torso on the opposite side.
Cameras in the eyes allow you to mirror the person you are talking to, it becomes more lively and a more honest meeting, says Patrik Elgh.
Hear more about what it's like to play the dragon in the clip above