After our recent successful synthesis, isolation and complete characterization, including single crystal X-Ray diffraction, of 3 mono-metallic uranium endohedrals (U@D_3h-C₇₄, U@C₂(5)-C₈₂, and U@C_2V(9)-C₈₂) has led us to continue exploring new U-based endohedral compounds. At the time this abstract is being written a total of 37 compounds have been detected: U@C_2n (2n=74, 80, 82, 86, 88, 90, 92, 94, 98, 100, 102, 104; U₂@C_2n (2n=72, 78, 80); U₂O@C_2n (2n=72, 74, 76, 78, 80); U₂N@C_2n (2n=72, 74, 76, 78, 80); U₂S@C_2n (2n=74, 76, 78, 80, 82, 84, 86); U₂C@C_2n (2n=72, 78, 80); and USc₂C@C₈₀ and USc₂N@C₈₀. We have isolated several of these compounds, such as U@C₇₆, U@C₈₄, U@C₈₆, U₂O@C₈₀ as well as others and their structures and bonding are being studied. An update of what we learn from these will be presented and discussed.