Ring peculiar galaxies include classic collisional ring systems, polar-ring galaxies, and extreme cases like Hoag’s Object, where a nearly empty gap separates a central spheroid from a bright star-forming ring (Hoag 1950; Finkelman et al. 2011). In ΛCDM, simulations can form many collisional rings via head-on encounters, but the rarity, symmetry, kinematics, and sometimes isolated environments of the most peculiar rings—especially nearly perfect, long-lived rings with no obvious “bullet” companion—remain difficult to reconcile with standard merger histories and halo statistics without fine-tuned or multiple-step interaction scenarios (Finkelman et al. 2011; Finkelman & Brosch 2011).