Shows like Supergirl

Courtney Whitmore, a smart, athletic and above all else kind girl, discovers her step-father has a secret: he used to be the sidekick to a superhero. "Borrowing" the long-lost hero’s cosmic staff, she becomes the unlikely inspiration for an entirely new generation of superheroes.

The series is set in New Gotham City, several years after it has been apparently abandoned by Batman. In his absence, Huntress, Oracle and Dinah are now the protectors of New Gotham: the Birds of Prey, and had taken over his war on crime. They are joined by Alfred Pennyworth, who serves Helena as she is heir to the Wayne estate; and Detective Jesse Reese, a police officer confronted with crimes and abilities he cannot explain.

After the Royal Family of Inhumans is splintered by a military coup, they barely escape to Hawaii where their surprising interactions with the lush world and humanity around them may prove to not only save them, but Earth itself.

Follow the adventures of a group of human mutants - led by the mysterious Adam Kane - possessing extraordinary powers as a result of genetic experimentation gone awry.

Teenage superheroes strive to prove themselves as members of the Justice League.

Duncan MacLeod cannot die -- he is a 400-year-old immortal, who has seen his share of humanity's history. Still, he risks his life in battle against other immortals and tries to save people from harm.

After being struck by lightning, CSI investigator Barry Allen awakens from a nine-month coma to discover he has been granted the gift of super speed. Teaming up with S.T.A.R. Labs, Barry takes on the persona of The Flash, the Fastest Man Alive, to protect his city.

A suburban couple's ordinary lives are rocked by the sudden discovery that their children possess mutant powers. Forced to go on the run from a hostile government, the family joins up with an underground network of mutants and must fight to survive.

Painkiller Jane is an American-Canadian science fiction and action television series based on the comic book character of the same name. Airing on the Sci Fi Channel in the US starting April 13, 2007 and Global in Canada, it starred Kristanna Loken as the titular character. On August 15, 2007, it was canceled after one season of 22 episodes.

Bizarre things start happening in the little New Mexico town where UFOs were spotted in 1947. Cut to 1999, when a cute high-school student saves the life of a teenage waitress. Surrounded by cliques of clever, angst-filled classmates, the two form a bond that threatens the survival of a secret universe involving superhuman powers, a yen for hot sauce and an alien gene pool.

Jaime Sommers is saved from death after receiving experimental medical implants. While adjusting to her new bionic powers and raising a rebellious younger sister, Jaime agrees to work for the Berkut Group, a quasi-governmental private organisation that performed her surgery.

Super soldier Max Guevera tries to live a normal life in post-apocalyptic Seattle while eluding capture by government agents from the covert biotech facility she escaped from as a child and searching for her genetically-enhanced brothers and sisters who have dispersed after escape.