This thesis paper uses Hashtag Community--- an installation art project---to reflect on human relationships under the control of computer algorithms. The project explores issues of consumption of images and controls over personal data in the internet age by visualizing and fictionalizing a world based on our online environment. It also probes the connection between online and offline relationships through a merging of physical and virtual elements: flags printed on vinyl, hand-silkscreened bags and an iPad with an Augmented Reality (AR) app. In the space, the characters --- Unicorn People: a group of genderless cartoon characters who have horns on their head --- are designed as a general avatar for everyone. This paper starts with the discussion of the relationship between the Unicorn People and visitors, which is analogous to that between users and avatars. It further argues our digital functionality online as an object instead of a subject. This paper also explores how human relationships have become manipulated as a digital product and how art can address this issue in an interactive and immersive way.