Name this superhero, according to popular cannon material:
Comes from a rich family with an impressive estate, one held in the family for years.
Parents were killed when he was a young boy, forcing him to abruptly leave childhood and the trauma from having his parents die act as motivation for the violent lifestyle he eventually adopts.
Leaves ancestral home to learn how to become the weapon he eventually evolves into.
Projects image of shallow drunken playboy, but actually has great sympathy for victims of bullies or villains, and strict moral codes that dictate his behavior.
Uses tons of expensive unique gadgets in his work to complete tasks.
Eventually returns home to family estate to be greeted by longtime male servant to the family who has remained loyal and devoted during the years he was gone, and who will ultimately prove to be more worldy and lethal than initially thought by the audience.
Who is this fictional superhero?