If you're white then you'd call a black person African or African-American. If you're black then you'd call a white person a white person.
No, he never made Call of Duty 4. He was an avid gamer and a fan of Call of Duty but he was never linked with the production of any of the games.
A nominee.
a person
kiwi
A bundle of sticks
A person who repeatedly makes mistakes can be called an "error-prone" individual or "someone prone to making mistakes." They may also be referred to as "careless" or "reckless" if their mistakes are due to a lack of attention or consideration.
Congress
Poker-faced.
Errata
a pacifist
I guess you can call that person an athlete.
A person who repairs pipes would be a plumber. I have never heard of any person who specifically repairs tape.
Outtakes are the part of a film that is removed because of mistakes in the production.
A person who is never satisfied with anything can be described as being discontent, perpetually dissatisfied, or perpetually unsatisfied.
Hypocritical or all talk.
a dead one