10 Unique Supergirl Facts Every DC Fan Should Know

1. She "Dated" Her Own Horse

In one of the most infamous Silver Age storylines, Supergirl had a romantic relationship with Comet the Super-Horse. Comet was actually a centaur from ancient Greece named Biron who had been turned into a horse by a sorcerer.

2. She Was Once a "Shape-Shifting Blob"

For a long period in the 1990s, the "real" Kara Zor-El didn't exist in DC continuity. Instead, Supergirl was Matrix, a protoplasmic lifeform created by a heroic Lex Luthor from an alternate dimension. Matrix could shape-shift and eventually bonded with a human woman named Linda Danvers, becoming a hybrid entity.

3. She Was an "Earth-Born Angel"

After Matrix merged with Linda Danvers, the character evolved into a literal Earth-Born Angel of Fire. In this form, she could manifest fiery wings and had powers rooted in mysticism rather than Kryptonian science. This version of Supergirl spent years fighting demons and supernatural threats rather than traditional supervillains.

4. She Was a Soap Opera Actress

During the late 1970s, Supergirl’s secret identity, Linda Lee Danvers, moved to New York City to pursue a career in show business. She actually landed a recurring role as an actress on a popular daytime soap opera called Secret Hearts.

5. She Was a Red Lantern

Supergirl is often defined by rage instead of hope like Superman. Her heart is so full of agony and rage from the experience of facing the destruction of her planet that she was once chosen by the Red Lantern Ring. She spent a significant amount of time as a member of the Red Lantern Corps, fueled by pure galactic fury.

6. Her Horse Was a "Protoplasmic Angel of Love"

The 1990s version of Comet was a shapeshifter who was actually a fusion of a male jockey and a female stand-up comedian. This version of Comet was an "Angel of Love" and could transform between a male human, a female human, and a winged centaur.

7. She Was a "Secret Weapon" for Years

When Kara first arrived on Earth, Superman didn't introduce her to the world immediately. Instead, he forced her to live in an orphanage in Midvale and wear a brunette wig to hide her identity. She operated as his "Secret Weapon" for three years before finally going public.

8. Pink Kryptonite "Gender-Swapped" Her

The Pink Kryptonite is running gag in the DC Supergirl series. While in older comics Pink Kryptonite was used for a controversial "personality change" gag, this modern iteration used it to physically alter her gender, temporarily turning her into a male version of herself.

9. She Has a Genius-Level IQ

Supergirl isn't just strong like a brute, she is also highly intelligent with genius level IQ. Unlike Superman, she was actually educated on Krypton itself. Her experience gave her amazing knowledge on science and technology. Additionally, she also possesses photographic memory.

10. She Taught Superman About the Red Sun

Superman is the mentor to Kara Zor El. However, she was the one who taught him about their physiology in their early years. In fact, it was Supergirl who taught Superman about the Red Sun and its effect on Kryptonians. Through her words, Superman understood why he had powers on Earth – which orbits a yellow sun.