In no particular order:
- Killua: great character and development, killer fighting style (obviously, lol), lightning is always a win in mangas, smart, loyal and caring.
- Zeno: "Silva, Ill need your support. Once I lock him in place, kill him, even if you have to kill me with him."
Can you become more badass than this? I just love the way he fights, thinks and how he sticks to his principles.
- Ging: funny, mysterious, possibly one of the strongest and most intelligent characters and while being a fucking asshole, you still somehow like him...
- Pariston: there are so many trolls in other series, but Pariston is probably the only one with quality, period. A freaking mastermind you can't see through. I could listen to him all day long.
Those four are my absolute favorite characters. Feitan and Mizaistom are two characters I think would make it into the list, too. But they lack screen time to make an impact on me.
Other than that, I like many other characters. Hisoka, Kurapika, Leorio, Hanzo, Machi and even Gon, just to name some.