A narcissist.
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
Congress
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.
a pacifist
Poker-faced.
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.
Errata
A lifelong learner or autodidact.
a dead one
Hypocritical or all talk.
Argumentative, difficult, problematic, disagreeable.