Dave wrote a song called "Something That I'm Not" about Lars Ulrich, because they were in a fight.
Here are some lyrics of the song:
"Unlike you, I'm no vision to myself, lest you forget
You didn't ever make metal, buddy, metal made you
To crush and roll over everyone along the way
Is something that you are, something that I'm not".
Metallica Fan #1: z0mg liek totally stfu, "Enter Sandman" pwns.
Megadeth Fan #1: Nah... "Kick The Chair" pwns that... but okay w/e.
He is the pioneer of Thrash Metal and along with Cliff Burton, the only reason why Metallica had good music (he wrote their best songs on the first two albums).
As a band leader, he has the reputation of being a dictator but incidentally, this is also one of the main reasons why Megadeth has some of the best music in this world. Album after album is consistent unlike their rival Metallica, who again, incidentally, began to suck after Dave Mustaine's departure and Cliff Burton's demise (seriously, haven't you noticed that?!).
Dave Mustaine is a musical genius and is very charismatic.