Percy Jackson and the Olympians: Legends

She is described in wolf form as having beautiful chocolate red fur and eyes as silver as mist. She is also described as being very tall, taller than any human. In Jason's dream, she was seven feet tall.

Being a Roman goddess, Lupa is harsh and judgmental towards others, mortals and gods alike. She only respects the strong, as any demigod who she judges to be weak is devoured by her and her wolves. Despite her militaristic personality, Lupa has a soft side. For example, while strict, she is not above making the occasional joke, as seen when she called Jason their "saving Grace" (a play on words in reference to both his surname and that he would help free Hera). She can also be a loving mother, as Percy claimed that she frequently tells her role in Remus and Romulus' fates, implying that she still is proud of them.

Lupa is the immortal Roman wolf goddess who trains Roman demigods in the ways of Rome. She trains the demigods at the Wolf House, then sends them to Camp Jupiter where they can join the Twelfth Legion Fulminata. Because of her role as an instructor to young demigods tied with the Roman Olympians, she is effectively the Roman counterpart of Chiron.