Supergirl is a series that revolves around Kara Dancers who is Superman’s biological Cousin. The first episode of this series aired on 26th October 2015 and sucks then had 5 seasons and 94 episodes.
The recent mid finale of season 5 shows The Monitor to have another hero to test for his recruitment to face the Crisis of Infinite Earth. The hero is Martian Manhunter who passed the test and proves his worth and takes his stand among the Best heroes.
This series was first mentioned in 2013 during the Arrowverse crossover.
The previous season revealed that The Monitor was not finished testing the heroes of Earth 38 with one of the scenes where he is seen freeing a Green Martian from prison and says that he has a chance of avenging himself as his brother insulted him.
In the first half of Supergirl 5, this Martian is forced to deal with long lost brother and proves himself to be worthy to stand along with the best heroes.
Season 5 reveals that Ma’alefa’ak, the Brother was born with inabilities to connect to another Green Martian and tries to erase his Father’s memories. He along with his brother is then forced to face the music.
The mid finale ended with Ma’alefa’ak using his power to save earth from Lena Luthor’s project: Non-Nocere. The Green Martian, J’onn helps his brother by lending him his spaceship. This proves that he is ready for the next big problem.