When Bruce was 8 years old, he witnessed a griefer with a hunter's handgun kill both his parents. Traumatized by the incident, Bruce swore to avenge his parents by fighting all griefers.
During his adolescence, Bruce traveled around the world, learning swordsmanship, archery, brewing, crafting, theatrics, and detective skills. Eventually, he returned to his hometown of Gotham to fight griefers.
At the inception of his career, due to his amateur appearance, griefers maintained a level of cockiness fighting him, and quickly got away when they couldn't. To remedy this, Bruce attempted to find an appearance that would scare his opponents. One night while he was sitting in his library after the latest in multiple failed attempts, a bat crashed through the window. Taking this as an omen, Bruce decided to make a bat costume for his war on crime.
Bruce looks like a normal person. He has blue eyes and black hair, with no beard. He wears a black suit with a purple tie.
As Bruce Wayne, he acts like a typical billionaire, putting on an air of pompousness and sophistication. This, however, is a farce, to hide his true nature. He severely hates griefers.
Armor & Gear
He wears custom armor made out of meteorites, painted to be dark brown like a bat, with the emblem of a bat on his chest, and a custom helmet that has bat-ears on it. He also wears a dark brown cape, that resembles bat-wings.
He has bat-shaped boomerangs that he throws at enemies.
Bat-Man is proficient in hand-to-hand combat as well.
He carries with him multiple longshots to help him scale walls/buildings/mountains/castles. It also helps him leap across buildings.
The "Bat-Man", having been trained by ninjas and thieves, is skilled in theatrics.
He carries with him blocks that emit smoke, whilst disguising themselves as the blocks around him. He can use ender pearls in conjunction with these blocks to give off the illusion of vanishing in a puff of smoke.
Ninja Dagger/Trickster Dagger
Bruce uses these two daggers to turn invisible, teleport slightly, or create copies of himself to fool enemies.