10 Characters That Could Appear In The Arrowverse
3. Lobo
Show: Supergirl
During an opening scene for Crisis on Earth-X Part I, Supergirl was fighting a Dominator and her sister, Alex, asked if she was fighting a Czarnian, the same species as Lobo. Lobo is a fun anti-hero that would without a doubt add an element to Supergirl that has been missing. Whether or not he is an ally or an enemy, he would add so much humor and have great fight scenes due to his durability and strength. It took up until now for Supergirl to have a decent main antagonist, but The Main Man could add a sense of urgency to the show that it desperately needs.
Even though Lobo is a Superman villain, nothing is stopping him from being involved with Supergirl. He is a bounty hunter so someone could place a bounty on Supergirl, and that's what could bring him to Earth. And let's face it, any scene involving himself and J'onn J'onzz (Martian Manhunter) would be a mix of suspense and hilarity.
With Supergirl about to end its third season every character still feels the same as to when they were first introduced and is causing the show to become stale. If there was ever a character that could change the status quo the show has produced it would be Lobo because of his unpredictability.