The 27-year-old Swedish star is seen in full clown make-up when he plays the disturbing menace in the horror film, but that smile is somewhat chilling even without all the paint.
In fact, something about seeing Skarsgard doing it in his ‘normal’ mode is even more disturbing.
Promoting the movie with Swedish radio station PP3, he appeared on their Instagram feed giving the camera that very particular look.
See it below.
Director Andy Muschietti has repeatedly spoken very highly of Skarsgard, and in one interview opened up about how he was able to be so scary.
“Each scene where Pennywise intervenes, Bill provided a new flavour to each take because he was part of the concept of making this monster unpredictable,” he said, according to Sunday World.
“And Bill doesn’t shy away from the exploration of that. He is so brave in that sense.
“And it was fun for him to surprise me and surprise himself and surprise everyone with new stuff.
“And it was, we even discussed with him before shooting we said, ‘Let’s go crazy.'”
Attention will soon turn to sequel It: Chapter Two, which is due in 2019.
It is out now.