The characters on Amazon Prime's The Boys fall into one of two categories: the good guys or the bad guys. The good guys consist of the group that calls themselves "The Boys," as well as supes, like Starlight. The bad guys are pretty much all the other superheroes and members of The Seven, an Avengers-esque squad that does a lot more bad for society than good.
Despite some being heroic and others being villains, it doesn't change the fact that almost all of them make for great TV characters that are interesting to watch and either root for or against.
Homelander
Love him or hate him, Homelander has one of the most fascinating story arcs on The Boys. He constantly finds new ways to re-emerge as the worst person in the universe, consistently letting others down and becoming more evil than anyone thought possible.
He wouldn't be a true supervillain without some kind of backstory, which is why viewers learn early on of his less than ideal childhood, which turned him into a robotic, narcissistic shell of a person. The best part of his character, though, is that despite all his rage and evilness, he has a sliver of a heart and he wants to be Ryan's dad, even though he really shouldn't.
Stormfront
Aya Cash's Stormfront got a lot of screen time in season 2 as the world's newest (and oldest) supervillain, who sometimes even gave decent advice. The greatest thing about Stormfront is that she never backs down, no matter how absolutely ridiculous things get.
Even when she lost an eye and she could barely move, she vowed to not give up in her quest for evil. There's something about her that is so dedicated and fun to watch and even more fun to root against. Despite her hilarity, she is still pure evil and one of the biggest supervillains TV has ever seen.
A-Train
A-Train started the series by accidentally killing Hughie's girlfriend, Robin. His apathy toward her death and the hurt it caused Hughie made him nobody's favorite character, but slowly he emerged as one that had the potential for growth.
A-Train not totally throwing Starlight under the bus for recovering Compound V on a secret solo mission was a step in the right direction. He also becomes determined to be reinstated into The Seven and even helps Starlight and Hughie with information against Stormfront in the process. He has a lot more to overcome if he is going to truly be a good guy, but he is on the right track.
Becca
Butcher's missing wife Becca wasn't properly introduced until season 2 when she was revealed to be alive and in hiding after giving birth to Homelander's son, Ryan.
Becca's devotion to protecting her son from his evil father was admirable, as was her ability to put her own happiness aside for the sake of her child. Everything about her was good, which is what made her death even more emotional to fans. However, knowing that she died trying to rescue her son and that she didn't blame him when he caused her death, proves how great of a person she really was, and made viewers forgive her for hiding out from Butcher for all those years.
Starlight
Annie January joined The Seven with the intention of being a genuine superhero, using her powers for good to save the world like she was taught to do all of her life. However, she was in for a rude awakening upon her arrival, but she stuck to her morals anyway.
Starlight's friendship turned relationship with Hughie and The Boys helped her realize that The Seven were not who she thought they were, and she was going to be a positive influence on the world, despite Vought's ulterior motives and plans for her. It would be easy for her to just give in, but she never does and she sticks by Hughie even when he initially lied to her. She is still trapped within the confines of Vought, and her story will be even better when she is free of interactions with other members of the superhero squad.
Mother's Milk
As one of the original members of The Boys, Mother's Milk has proved his loyalty to Butcher and the others to the point of putting his marriage and relationship with his daughter at risk.
His intelligence and ability to be the voice of reason, as opposed to Butcher and Frenchie's spontaneity, make him a crucial member of the group and someone they could not survive without, though sometimes it feels like he would rather survive without them and their antics. His realism also makes him funny and relatable, like when Starlight and Hughie joined him on a road trip and he insisted that they shut their Billy Joel sing-along down immediately.
Frenchie
Frenchie's bad-boy-turned-good character arc has been not only fun to root for, but watching his relationship grow with Kimiko (aka The Female) has turned him into a fan favorite.
Frenchie's loyalty and protective nature show that he has a heart of gold, and he regrets decisions he's made in the past. He still has a lot of room to grow, as he can be hasty and impulsive, but it all comes from a place of love and loyalty. Plus, his French accent is adorable, especially when he refers to Hughie.
Kimiko
Kimiko is a woman of few words, but she holds a lot of power and has come a long way since first joining The Boys. She has proven her loyalty time and time again (even going against her own brother at times, though she was able to avenge him later).
Kimiko, along with Annie, brings superpowers to the good guys, which they desperately need when facing off against The Seven. Her help in the epic takedown of Stormfront at the end of season 2 cemented her as one of the most powerful characters on the show, and one that fans will never get tired of watching -- though in order for her to be a favorite, she is going to need more screentime.
Hughie
Hughie Campbell has gone through a lot since the first episode of The Boys. His girlfriend was killed by a Supe, and instead of getting justice, he was paid to be quiet. Frustrated and heartbroken, he joined Butcher and the rest of The Boys in a quest to take down Vought and The Seven.
Hughie's introverted nature and lack of natural strength have made him an unlikely hero ready to go into battle, but he has proven he has the wit and connections to make it through. His relationship with Annie has made him happier and bettered his chances at avenging Robin. Hughie's ability to go head to head with Billy Butcher, his teammate and frenemy, makes him a fun character to watch grow and stick up for himself.
Butcher
There are a lot of things Billy Butcher could work on: his anger, impulsiveness, and lack of consequential thoughts are on the list. However, Butcher is the best character because of his ruthlessness and devotion to making things right by his wife, Becca, whether she is dead or alive.
Butcher knows that every decision he makes is potentially dangerous and could be life-ending, but he does it anyway because he wants to take down the bad guys. He is tough as nails but also a softie at heart, making sure Ryan is safe, even after Becca's death. Butcher's heart is big and he is always growing as a person, plus he is unintentionally hilarious.