Well, "Quisling" refers to a Norwegian army officer and politician named Vidkun Quisling who collaborated with the Nazi German occupation during World War II, or, more generally, the term has come to mean a traitor who collaborates with an enemy. After Germany invaded Norway in 1940, he established an illegal, Nazi-backed government, which led to his name becoming synonymous with treachery after he was convicted of treason and executed in 1945.

How about that, seems pretty fitting...