Blackbeard Marshall D. Teach, originally a member of the Whitebeard Pirates' second division, had been biding his time in the crew for decades just to obtain the Dark-Dark Fruit.
Before he possessed the power to realize his ambition, he was willing to hide his true intentions and be content as a mediocre Teach.
Once the ambition-realizing Dark-Dark Fruit appeared, he would not hesitate to turn his ambition into reality.
Even longtime friends like the fourth division commander Thatch, he could stab in the back just to grab the Dark-Dark Fruit and completely sever ties with the Whitebeard Pirates.
He believed that dreams never end.
At the age of thirty-eight, he still harbors the dream of becoming the Pirate King and conquering the world.
For this, he defeated his division commander Ace and handed him over to the Navy to use as a stepping stone to become one of the Seven Warlords of the Sea.
