Margaret Lillian Adams (born August 9, 1986), also known as MRirian and Magibon (マギボン), is an American former YouTuber based in Japan.

In 2006, Adams began posting videos on YouTube of herself silently looking at the camera, which became popular in Japan and led her channel to rank no.

[3] Adams joined YouTube under the username "MRirian"[4] and initially used the website to watch music videos of Japanese musicians.

[3] Adams stated to PingMag that she believed her non-speaking videos were popular because her viewers found them "meaningful" in that they would "make everything stop for a minute, and have someone just smile at them.

[3] In February 2008, Adams was profiled and interviewed on a serialized weekly segment titled "Let's Look for the Mysterious Idol, Magibon!"

[8][9] A fan event was scheduled for April 12, 2008 by Usen, the parent company of GyaO!, but this was canceled due to security concerns following the receipt of a number of threatening emails.

[5] She appeared at the world premiere of Blue Symphony at the 21st Tokyo International Film Festival in Roppongi on October 22, 2008.

[3] On the other hand, Adams' channel was received less favorably in the United States, with many comments responding in confusion over her content.