Which goddess's physical appearance is described most similarly to the original Celtic goddesses' "dual nature"?

The goddess Hel, from Norse mythology, embodies a dual nature that aligns closely with the original Celtic goddesses. She is often characterized by her association with both life and death, ruling over the realm of the dead while also being connected to the cycles of nature and the human experience. This duality reflects the complex nature of existence, encompassing both the joy of life and the inevitability of death, which is a theme prominent in Celtic mythology as well.

Brigid, while also significant in her dualities of light and fire, as well as agriculture and healing, does not embody the same stark contrast between life and death that Hel represents. Demeter, the Greek goddess of the harvest, is primarily focused on fertility and agriculture, and Aphrodite symbolizes love and beauty, lacking the dual aspect of life and death found in Hel. Thus, Hel is the goddess whose physical appearance and character most resonate with the concept of duality reminiscent of the original Celtic goddesses.