British and French Royalist propaganda presented Napoleon as an "ogre". Today, most countries which aren't France and Poland (and perhaps others) tend to present Napoleon as some sort of 19th century Hitler.

I realize Napoleonic France was responsible for atrocities, notably in Spain, or by reinstating slavery in Haiti and whatnot. But considering the time period, and with historical perspective, is it fair to consider Napoleon was a bloodthirsty tyrant-like figure? Does this outweigh positive contributions, if any, brought by his reign/influence? Did he conquer for his personal selfish glory, or was he partly compelled to war?

Sorry if it's a puerile and unscientific way to put it, but ultimately, was he really a "bad guy"?