Atomically precise metallic clusters behaving as superatoms, are relevant building blocks towards new materials under the bottom-up approach. Here we discussed the plausible formation of the Cu10Ru cluster as a superatomic specie accounted its 1S2 1P6 1D10 shell order, with the aim of identification of particular clusters with enhanced stability. By stochastic structure search on Cu10Ru clusters, we found six low-lying cluster isomers with ΔE values from 0.0 to 4.7 kcal∙mol above the ground state denoting an endohedral motif with the Ru dopant inside the Cu10 cage, as the favored structures. By using molecular dynamics simulations we found a clear trend of encapsulation of the Ru atom at low temperatures, quantified by the Cu-Ru bonding distances during the annealing procedure. The 17-ve counterpart, Cu9Ru shows a large electron affinity, owing to the trend to achieve a electronic shell closing as a new superhalogen species. These results are useful for further rationalization and design of novel superatoms expanding the libraries of endohedral clusters.