 This study experimentally and theoretically investigates structural defects, kink solitons, in two-dimensional ion-coulomb crystals, showing how different types can be realized and transformed by varying the aspect ratio of trap confinement. Impurities like mass defects are also discussed and their effects on kink dynamics analyzed through numerical simulations and calculations of Piles-Nebaro potential. Finally, static electric fields are demonstrated to provide control over mass defects' influence on kinks for deterministic manipulation and creation. This article was authored by H. L. Partner, R. Nygma-Tullin, T. Bergemeister, and others.