Dib. i always felt sorry for him when he suffered. Then I lol'd.
I go back and forth all the time, but my favorite character is usually ZIM, because he's so amusing, creepy, and he despises humanity. I love Dib because he has a dark personality, he's righteous, he's relatable, and he's also amusing. I love GIR because obviously he's hilarious, but also because his character is deeper if you think about it. He shows his true nature when he's in duty-mode, but he's usually trapped by his insanity and incapable of expressing his true emotions. I also love Gaz and Tak because they're relatable like Dib, they have tough and bitter personalities, and I can't help but admire how cool they are.
GIR cause he is always in the chicken
I love Zim. And Dib. And GIR. And Gaz.
ONE DOES NOT SIMPLY CHOOSE A FAVORITE CHARACTER.