Kara Danvers defies once again the odds of becoming a superhero and trying to prove it is not at all easy. Pushing herself to the limit and creating shameful mishaps would mean #TerribleGirl. So how will Danvers go about the next episode of "Supergirl"? According to Cartermatt, another dangerous villain will be on the loose to challenge the strength of National City's hero.

"Supergirl" episode 2 showed a menace hellgrammite that Danvers would have battled and surprisingly a relative from her supernatural past, Aunt Astra, comes back again to become a culprit in "Supergirl's" life. Meanwhile, Danvers' ever supportive sister Alex helps her to be fully-prepared in becoming a hero. Even when Alex became the pit to trap "Supergirl," Alex still sets her younger sister to stay confident in her goal to save the city.

"Supergirl" spoilers also revealed that aside from the hellgramite that came out from the alien prison, "Supergirl" will yet have to face again another villain which is known as Reactron.

According to Cartermatt's "Supergirl" synopsis for "Fight or Flight": "Supergirl's powers are tested when Reactron, one of Superman's formidable enemies, arrives in National City and targets the young hero."

In DC history, "Reactron" is one of the known supervillains; the next enemy that would attack National City's hero can generate amounts of "radiation" energy and creates a powerful blast.

"Supergirl" episode 4 titled "Cowboys and Aliens", actor Chris Browning will portray the role of the energy-amplified villain.

The last episode also spoiled on what could be the next move of Cat with regards to having the interview with "Supergirl." Cartermatt's synopsis also hints that "Cat plans to run an exposé on Supergirl." What will be the catty editor-in-chief have in mind after her meeting Supergirl? What will her next headline be for the National City's superhero and will she recognize Danvers from the private interview?

Watch "Supergirl" every Mon. on CBS.