Yeah FrankieV, having the same rig for both biped and back pack would be a solution. That’s how I had it originally but my project lead wants the pack to be able to animate taking off the biped if needed (with shoulder straps, waist straps, and main back piece) . I was looking at this video for linking two blueprints https://www.youtube.com/watch?v=EM_HYqQdToE&t=2371s . Do you think it’s a possibility?