In the past, Undina studied to become the priestess of the Eusebes Shrine. However, another candidate, Coral the Betta, ended up being chosen over her. (StH: #261; SU: #91) Undina eventually left Meropis to study in Spagonia, before deciding instead to go travel the world. During her trip, Undina met Honey the Cat in Empire City and decided to model some clothing she designed. Undina also watched the Chaos Emerald Championship before leaving to continue her worldwide travels, visiting other cities such as Shamar and Adabat. Unfortunately, the princess was apparently kidnapped by pirates who held her for ransom. (StH: #271, #278, #285; SU: #91)