Rubylla

Rubylla is a fictional character appearing in American comic books published by DC Comics. She is primarily known as an adversary of the superhero Supergirl. Her origins and specific powers have varied across different comic book iterations, but she is often depicted as a Kryptonian or a being with similar abilities, making her a formidable physical threat to Supergirl.

In some storylines, Rubylla has been presented as a survivor from a doomed planet, seeking to conquer or dominate Earth. Her motivations typically revolve around a desire for power, control, or revenge. Her abilities often mirror those of Kryptonians, including super strength, flight, invulnerability, and heat vision. This makes her a personal and powerful antagonist for Supergirl, who shares many of the same capabilities.

Rubylla's appearances have been relatively infrequent compared to some of Supergirl's more prominent foes. She has featured in key story arcs that have tested Supergirl's strength and resilience, often forcing her to confront her own limits. The character's design and personality are intended to evoke a sense of danger and a dark reflection of Supergirl's own potential. She represents a challenge that is not just physical but also ideological, embodying a darker path that Supergirl has managed to avoid.