In computing, an avatar is a graphical representation of a user, the user's character, or persona. An avatar can be a two-dimensional picture, also known as a profile picture or userpic, or a three-dimensional digital representation, often used in games.

My existing avatar has been in use since 2010. It was created from a selfie taken at Expo 2010 Shanghai, where I proudly visited every pavilion. I stood in front of the Expo Axis, placed my Canon E1000D atop a trash can near the Hong Kong pavilion, and used the self-timer feature of the DSLR camera to capture the selfie. The picture depicts me wearing a white sleeveless shirt and a black backpack, in front of background of trees, people, and the Expo Axis. Subsequently, I cropped the image with Adobe Photoshop, blurred the background, and produced the final image.

Over the years, as I expanded my online presence, readers from dozens of social media websites and forums have seen my avatar. It has become part of my online identity, my personal brand.

In 2016, I realized that I still have the same shirt as shown in my avatar. On the 6-year anniversary of the original picture, I took a new photo of me in the same outfit, in front of a cactus behind the university. In 2020, I did it again for the 10-year anniversary, but indoors due to COVID-19 pandemic. Nevertheless, I did not adopt either picture as my avatar, because they have drastically different backgrounds and would make me unrecognizable online.