Duo is the official mascot of Duolingo. He is a male green owl of an unknown species and is meant to symbolize knowledge, wisdom and learning. In Duolingo it can at times serve as a coach to motivate users to achieve higher learning goals, and can also instruct users on several aspects of the Duolingo website.
Duo wears several outfits in different occasions. He sometimes wears an academic gown, a coach Outfit, or a hat. You can buy outfits for Duo on the iOS or Android lingot store.
Duo has recently been used in memes to depict the reminders to practice in a humorous way, mostly in the amount of emails users receive. Duo has been known to call in ballistic missile-strikes on people who do not practice, or physically abuse them. The meme has become known as "Evil Duolingo Owl".
The official Duolingo YouTube channel posted a video titled "Introducing Duo Push" on April 1st, 2019, as a nod to the "Evil Duo" memes. In the video, a person dressed in Duo costume is shown stalking users who have not completed their daily lessons in order to "push" them toward their goals. 
- ↑ Duolingo Forums, German for French, Duo est une chouette, September 19, 2017.
- ↑ Dictionary.com, aigrette
- ↑ https://trew.pw/ogBog/nf1nf/i/o-duolingo-hi-its-duo-looks-like-missed-your-korean-e9761ec778e749ed89478ff70e13993e
- ↑ https://becausetheinternet.ga/posts/152027
- ↑ https://knowyourmeme.com/memes/evil-duolingo-owl
- ↑ https://www.youtube.com/watch?v=8wc83qX6oNM