As the title says. I did a nice and harmless fort and everything went fine despite being in an evil biome. Just the occasional evil fog drifting across the land. Then the first goblin siege began. And storming the gates were not only the usual olms but an assault of tame war cave dragons! I managed to battle it down with a hail of crossbow bolts and a decent array of 20 melee dwarves, recovered my wounded, buried 5 dead and happily butchered more piles of meat and bone then I can use in a fort's lifetime. I even upped the defenses by another two squads to make sure and yep, there they were again next year.
Even more dragons, several squads of bowgoblins of their own, but still I was confident that my iron-clad militia will hold their own. Then suddenly in the middle of the fray with two dozen dragons and dozens more of pikegoblins stuff exploded. And exploded again and again until everything was covered in smoke and fire and the announcements were full of deadly purple. Waitamin, I thought cave dragons don't have fire breaths I though, but then I found the source. The master of the goblins himself (a title he created by force of argument and appointed himself to it), a fearsome unique hellcreature by the name of Lisig Hailedpacked the Unseen Wasps. It machinegunned everything with fireballs like a elite marksdwarf on speed until there was only smoke, 4 cave dragons and a single mace goblin left. Then it proceeded to kick down the doors of my inner fortress and burn everything inside. Funniest moment was when a tantruming survivor actually picked the master as his target for a fistfight. He wasn't impressed.
Afterwards I checked him out on legends and yep, he tamed those dragons himself. Curios though that was only credited for 23 kills (and only 3 were from my dwarves). Even though he pretty much single-handed wiped out a 150+ strong fortress. Seems like burning the shit out of your opponents doesn't count as a kill for the tally.