Duo was fatally hit by a Tesla Cybertruck, the language-learning company announced this week. The snarky owl has been the face of Duolingo for over a decade. Why his sudden demise, and what's next?

Duolingo’s Duo the Owl, an internet-famous big green bird, was killed by a Cybertruck in an apparent marketing stunt orchestrated by the language-learning app this week.

Duolingo’s unhinged owl mascot Duo has frequently threatened death (jokingly, of course) to those who fail to complete their language lessons on the Duolingo app. But today, it’s Duo who has died, according to the brand, as part of its latest marketing stunt.