Groot is a tree of few words. Well, three words to be precise. With every utterance of "I am Groot," his loyal team of Guardians knows exactly what he's trying to say. He's sweet when dealing with his teammates, even offering a hug to Captain Marvel when she's having a bad day in space. But he's a hardcore badass when dealing with his enemies, smashing them in a way the Hulk would be proud of.
Spiderman is a man of many words. When a silent battle will suffice, Peter is flapping his mouth. In terms of strategy, it's effective. The enemy often loses focus and Spiderman can go in for that knock-out punch. His sass and sarcasm leave the reader laughing. Until another person dear to him dies. However, I think this makes him a more realistic character, and more dear to me. He was the character that introduces comics to me, and he will forever hold a special place in my heart.
As a woman, I notice how few non-spinoff, competent, female characters there are, especially in the "gray" category. For Gamora, things aren't quite so cut-and-dry, black-and-white. She is "the most dangerous woman in the galaxy." Now, if not for Thanos and Galactus, I might argue "most dangerous being," but I have to admit they have her beat. She doesn't hesitate when someone needs to be killed, and she doesn't need saving. She can handle herself in a fight, and the Guardians often turn to her for help. She fights by the rules, not resorting to cheating like many other characters, and she always comes out on top. She is my role model.
Loki was made popular through the movies Thor and Avengers. Personally, I prefer him as the aspiring good-guy in the Loki: Agent of Asgard series going on now. Loki as a playful trickster trying to amend his ways is a character that I can relate to more than a vengeful brother. He's a character that I want to win, and don't feel guilty about wanting to win. He's a snarky character who points out the flaws in others, but also is insecure and can find the faults in himself.
Deadpool is a character of far too many words, which is why he is my all-time favorite character. Yes, maybe I am a bit stereotypical, but what can I say? I'm a fan of the imfamous Merc with the Mouth. His constant babble and hate on the artists and readers is what really draws me in. Nothing better than being mocked by what you're in reading, in my mind. Especially if he can make is personal. Knowing that this character has so very many flaws, but that he never lets that bring him down. Recently (spoilers) his ability to find a wife that loves him for him and connecting with his preteen daughter who also loves him is an amazing tale. Not only is he the Merc with the Mouth with a great sense of humor, in my mind, but he is also proof that no matter how bad things get, you an always find light at the end of the tunnel.