the MOAB takedown ability is unlocked with the monkey buccaneer.
it is great with mutiple groups of MOAB takedowns but on BFB's because it with a giant hook attacking not the "closest" as they say but actually attacks the strongest of anything except the ZOMG's.
Anyway the hook attcks and attaches to the object with its hook. grabbing it slowly towards it and forcing it to disappear, even MOABS.
Wait until a BFB appears to activate it.
the bad points are:
Was activated it does not attack.
You don't gain money from the ability.