I already saw he was an ass. First time I noticed him in news or where, was that nuclear submarine the Kursk sinking, him responding way too late and after he finally did, he went on to bury the story right away. Must have been in his first year in office.
He's still a huge suspect in the 1999-2000 bombings of apartments in Russia. Many ties towards him as either head of current FSB or whatever advisory role he played right before Yeltsin would move.