Ladies and Gentlemen, I present to you the crowning resident of the Mirthdefense Extreme Security Containment Facility:
Bikda Mistyfog the Hole of Puzzles, Forgotten Beast accursed smoke
HUSK. Unfortunately it is unlikely to be recaptured for further experimentation (such as retention of it's poisonous bite, for instance). It was led into the cloud by an intrepid volunteer, also pictured.
EDIT: Never mind, it pathed right to my fort. All the other husks just wandered off. I decided to test it's general combat effectiveness first, and pitted it against an exceptional-iron equipped legendary axelord/legendary shield user with master dodging and grand master armor use. Bikda won handily. It seems that it's far too big for a single axedwarf to damage to the point of true death.
The beast won two subsequent duels with similarly-skilled military dwarves. Mr. Beard, who has legendary+5 in all combat attributes, was able to sever it's head with the help of his two most skilled fellow axe lords.
After a save-scum, it kicked a dwarf so hard it flew back 5z into a wall and parts exploded. Clearly a significant boost in power.
Further testing confirms that other FB's consider it hostile. FB's that were previously affected by the friendliness bug will attack Bekda with gusto.
Anyway I re-caged it with the same web trap that caught the titan. Any suggestions as to further science?
It's worth noting that it's combat so far has consisted
entirely mostly of kicks, with very few bites. It also retained trapavoid, unsurprisingly. Further !!SCIENCE!! to come.