Duolingo has partnered with Netflix for a major cross-promotional campaign for the second season of the latter’s hit Korean dystopia drama Squid Game. The “Learn Korean or Else” promotion blends both the real and virtual world.

The campaign, "Learn Korean or Else," includes a new voice-activated TikTok filter, inspired by the Red Light, Green Light game in "Squid Game."

Duo, the green owl mascot, will be everywhere in the run-up to Squid Game season 2's debut, being his usual menacing self to encourage people to take Korean lessons. As well as wearing the Pink Guard uniform in the app, fans will also start to see Duolingo ads on Netflix's ad-supported tier, so if you thought you could escape him, you're wrong!