Osaurus

Working directly with the Osaurus team, I built a single Rive character rig designed to carry an entire library of agent states rather than a handful of decorative loops. The rig uses continuous silhouette limbs (cutout pieces with hidden overlap underneath) and bone weighted deformation on the head, so the line stays clean through every pose without needing separate artwork per movement. On top of that base, the state machine grew into a full behavioral vocabulary organized into a handful of groups: movement (walking, running, jumping, dancing), emotional reactions (crying, celebrating, showing real frustration on an error), and context specific actions tied to what the agent is actually doing (thinking, writing code, searching the web). A separate talking layer drives a full viseme set for lip sync, active only while the character is actually speaking, and a pick up and drop interaction split into drag, fall and land so the dev team can control timing and drop height on their end. A layered expression system runs underneath all of it, blinking and reacting on its own, but also picking up cues automatically from specific poses, a sad walk cycle triggers a sad face without anyone having to set it twice. The last piece was a styling system: headwear (everything from a beret to a full mecha helmet), small worn accessories, and the dinosaur species itself all swap through the same set of properties on one shared skeleton, so a new head, a new accessory, or a whole new dino ends up being a data change, never a rebuild.