I think Spine was started by one of the libGDX guys, Nate Sweet, and someone else (I can&#x27;t find an About or Team page on their site). The other primary libGDX developer is Mario Zechner (&#x27;badlogic around here) but I don&#x27;t think he&#x27;s on the Esoteric team. I think he works for RoboVM now, in fact.