Steve is the main protagonist of Minecraft. Very little is known about Steve and who or what it is, where it orignated from, what its goal is, and if it's even human.
Steve doesn't have much of a personality nor a real goal on its own. It never talks, all it really does is actions related to the player's choice. He could be a nice generous man, or a sadistic cruel mass homicidal maniac, who has absolutely no morals. He can vary so much that he fits in nearly every category. Because Steve can be an administrator, he could be considered lawful good. That is because he enforces by the rules of Minecraft. Or if he is a troll, he could be a terrorist, the posibilities (that's how it's spelled) are endless.
Powers and Abilities
Steve is capable of carrying over four hundred thousand tons of materials, and he is able to break solid wood trunks and rocks quite easily with his punches. And, if enough time is taken, even diamond and minecraftian obsidian can be broken by Steve's constant assault. He's even able to kill zombies and other beasts only with his hands. His super strength extends to his legs, being able to jump 1 meter high with ease.
Steve has shown to have great combat proficiency, being able to deal with creatures much more powerful or bigger than him easily. He also shown being able to defend from arrows using a sword, and to shoot arrows very far.
Steve is very apt of crafting potions. He can craft healing, fire-protecting, speeding and many other types of potions.
Steve is able to craft many items with very limited tools, even being able to craft pure diamond blades simply by having a crafting table.
Minor Super Speed
Steve is able to run at very fast speeds for a human, however, his stamina depletes even faster than a normal human if he keeps running.
Steve is able to build alone very complex buildings, such as castles and gigantic skyscrapers, provided he has enough materials. His building speed is very fast, and he can construct a simple house in a matter of minutes.
Steve has a very high vitality, being able to survive sword blows, explosions, arrow shots to the head, lava submersion, suffocation and drowning.
Big Lung Capacity
Steve is able to survive for a longer time than a normal human when underwater.
Steve has shown great skill with a sword, being able to deflect/defend arrows with a sword, and to defeat easily other enemies.
General Weapon Skill
Steve is able to use tools as weapons, being able to wield axes, hoes, pickaxes and shovels efficiently, altough not even near as his ability with the sword.
Bow and Arrow Skill
Steve is able to use bow and arrows with proficiency, being able to hit afar with a bow and to kill normal animals with just one or two arrows.
Steve is able to plan complex strategies to defeat many of his enemies, and he is an expert at detecting weaknesses. As well, he can build complex traps to many types of enemies.
When well-fed, Steve can regenerate quickly from wounds otherwise considered deadly, like sword slashes and being shot at the head by arrows, and even explosions. However, it is a slow proccess, taking many seconds to heal from simple slashes and attacks, and he needs to be well-fed.
Since the common theorized story of Minecraft is that Steve is trying to save the world and Testificates from the Endermen army and their leader the Dragon, it can be based on that Steve is caring and brave. However; since its personality is based on you, it's up to you to decide what it does and how it acts. Is Steve going to risk everything for the Testificates, is it going to procrastinate and save the world later, is it going to be a morally ambigious anti hero who constantly steals from the Testificates and makes it rather unclear whether it's doing it for the greater good or just its own selfish gain, or is it not even going to be the slightest bit heroic and just run around mindlessly killing animals and testificates not even trying to save the world, or is he going to be an evil being, not trying to save the world, and in fact being even worse than the Enderdragon? Another factor is what mode you pick, if you pick Hardcore mode and fail that ultimately means that Steve failed its quest to save the world and that the Ender-Dragon succeeds in whatever his goal was, however; if you chose survival mode and died you simply come back without your tools.
Steve's default clothes are blue pants and a shirt, though, with editing you can change its clothes and apperance completely.