What is the difference between a White Knight and a Whiney Knight I hear you ask?
To me, a “White Knight” is someone who will “defend” someone (usually a female), not for the sake of defending them, but to seem awesome. They usually expect something in return (praise, the everlasting love and affection of the (usually) female). When they do not get praise/everlasting gratitude&affection, they often quickly transform into the “Whiney Knight,” who complains about the lack of gratitude and asks why they ever try doing “nice” things in the first place.
Very accurate.
In business, a white knight, or "friendly investor," may be a corporation or a person that intends to help another firm.There are many types of white knights. Alternatively, a grey knight is an acquiring company that enters a bid for a hostile takeover in addition to the target firm and first bidder, perceived as more favorable than the black knight (unfriendly bidder), but less favorable than the white knight (friendly bidder).