Fandom: Supergirl

Lilania Osiris hails from a planet called Gramorah, a planet of mainly nocturnal Shapeshifters with blue skin and black eyes. Gramorah orbits the same red sun as Krypton. Her home is ruled by a tyrannical Arch Deacon, who fancies himself a king. He oppresses his people and sells many of them as slaves to the Daximites in exchange for peace with Daxim.

Lilania's parents were members of a rebellion forming among the Gramorans. They spoke out against the Arch Deacon, urging people to rise up against him. They were arrested, but released on parole with the threat of banishment to Fort Rozz if they ever spoke out again.

Refusing to give up, her parents organize a protest in front of the capital building. Many supporters attend, including a 13-year-old Lilania, despite her parents warnings.

The Arch Deacon sends the Gramoran militia to break up the rally, capturing Lilania and her parents in the process. He surmises that Lilania is their daughter and sentences them to public execution.

He forces Lilania to watch as he kills her parents and then, to make an example of her, he condemns her to a life sentence in Fort Rozz, under the accusations of treason, espionage, and assault of a political figure.

She spends the next few decades trapped in the highest security prison in the universe, a child among criminals.

When Fort Rozz is dragged out of the Phantom Zone, Lilania escapes the wreckage and struggles to adjust to life among the humans.

Seven years after her escape, she's tracked down by the DEO and imprisoned in one of their small sites in the middle of no where. The location is supervised by a cruel man who experiments on her in an attempt to find out how she shapeshifts.

She manages to escape and creates a new identity - Lila Oris. She's hired by Cat Grant as a reporter.

Three years later, she meets Kara Danvers. Kara becomes her first real friend. She quickly discovers that Kara is Supergirl, having already deduced that she was a Kryptonian, but waits until Kara tells her to say anything.

The fight with Astra and the other Fort Rozz Kryptonians reveals Lila's true nature as a Gramoran.

She joins the DEO with Winn, embracing her true form and becoming their first official alien agent, besides J'onn.

When Mon-el shows up, she hates him for what his people did to hers, making a deal with the Arch Deacon to enslave many Gramorans.

Eventually, she warms up to him, learning to view him apart from his people.

Later, feeling like she could do more, she follows in James' footsteps and takes on a superhero persona - Delta. She uses a human complexion to help hide her identity and shapeshifts to change her voice.

Kara doesn't like Delta, trying to convince J'onn to stop her. Lila defends herself, comparing Delta to Supergirl.

She helps protect the city during the Daximite invasion in the persona of Delta.

Lila tries to help Kara through the loss of Mon-El both as herself and as Delta.

During Psych's attack she helps Kara as Delta. At first, she resists Psych's attacks, but the Psychic pushes harder, forcing her way into Lila's mind.

The sheer amount of Psychic energy puts her into shock. Kara finds her lying in the street and flies her back to the DEO. By the time they get there, Delta/Lila's going into cardiac arrest. They manage to stabilize her, but she's comatose. J'onn can't connect with her mind and she shifts back into her true form, revealing her identity.

When Mon-El returns, Kara shows him where they're keeping Lila's unconscious body. He promises to try and find something in his ship from the future to help her.

Kara's beaten badly and he wakes up Brainy. After Brainy helps wake up Kara, he enters Lila's mind to try and do the same for her.

Lila is trapped in her subconscious, which takes the form of Gramorah in the midst of a civil war. Lila is trying to protect citizens and rebels as they fight off the Arch Deacon's militia.

As Brainy digs deeper, he finds that they're also fighting the Daximites, the rogue Kryptonians, and many of the Fort Rozz prisoners. The residual psychic energy from Psych's attack trapped Lila in a battle with all her enemies. He manages to help her navigate out of the psychological war zone and bring her back.

She helps Kara and the Legion stop the world killers and goes back to the future with Mon-El and Winn.

Yep... that's it. I literally stopped watching the show after Winn left... he's the only reason I made it 3 seasons into this show.
So, naturally, I just made Lila go with him to the future.
Anyway, yeah, Supergirl is probably my least favorite Arrowverse show that I have watched. (The others I have absolutely NO desire to ever watch.)
I created this character because I like coming up with new alien species.