I got the name "Mune' first from the game Chrono Trigger for SNES. There were these two beasties who were a sort of main boss named Masa (who claimed to be strong) and Mune (who claimed to be intelligent). They fused together to form Masamune, which was a bigger beastie which turned into a sword once defeated.
Now later I fiound out a bit more about the story behind the name. Masamune is a Warlord from Japanese history, but in CT (and many other Square games) Masamune was a powerful sword. Mune is also a latin word from which our English word 'Immune' derives (which is the negative of it). It also may mean something naughty or funny in Japanese or Chinese, as I've gotten some odd comments before from people online.