2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/192758We investigate solutions of the Klein-Gordon equation in a class of five dimensional geometries presenting the same symmetries and asymptotic structure as the Gross-Perry-Sorkin monopole solution. Apart from globally regular metrics, we consider also squashed Kaluza-Klein black holes backgrounds.11 pages, 2 figures; v2: minor corrections, to appear in MPLAGeneral Relativity and Quantum Cosmologytext