The discovery of exoplanets beyond our solar system in recent decades has led to searches for the origins of these other worlds. In this study, we investigate the possibility of exoplanets originating from beyond our galaxy, but without the need for observations outside the Milky Way, considering the potential for exoplanet-hosting stars to have been accreted through the last major merger event with the dwarf galaxy Gaia-Enceladus, 10 billion years ago. Utilizing data from the GAIA DR3 catalog and multi-region spectroscopic catalogs such as APOGEE, SEGUE, RAVE, LAMOST, and GALAH, crossmatch were performed to identify halo stars that may have been affected by Gaia-Enceladus. This merger event is considered a possible mechanism for the introduction of extragalactic interstellar material into the Milky Way's disk. By calculating the orbital parameters of the identified stars, it is possible to analyze their kinematics to determine if they exhibit characteristics consistent with an origin in the galactic halo. Previous results suggest the presence of a population whose kinematics indicate a possible extragalactic origin, raising the possibility of the existence of exoplanets originating beyond the Milky Way. This study contributes to a deeper understanding of the formation and evolution of planetary systems on cosmic scales.