Systems and techniques are described herein for generating virtual representation (e.g., avatar). For example, a process can include obtaining data describing a virtual representation, the data including a hierarchical set of nodes, wherein a first node of the set of nodes includes type information, source information, and a mapping, and wherein a child node of the hierarchical set of nodes includes data associated with a segment of the virtual representation; identifying, based on the type information, a format associated with the virtual representation of a user; identifying, based on the mapping, the child node in the hierarchical set of nodes; identifying, based on the source information, a portion of the data associated with the child node; and processing the data associated with the segment of the virtual representation of the child node based on a corresponding format for the virtual representation to generate a segment of the virtual representation.