Zetsu

 Companionship has never been a problem to Zetsu. Tough luck, he can't be alone, too. He stands out in Akatsuki group. Well, honestly, who wouldn't when your head is enclosed in a venus fly trap-like extensions. Moreover, his body is divided in two different colours, white side and black side with two different personalities.

 Zetsu holds a significant role in Akatsuki. Aside from being a spy, he is also assigned to gather the ring of the deceased Akatsuki members. True to his venus fly trap appearance, Zetsu is cannibal. Thus he is tasked to eat those that have connection to Akatsuki, to make sure that any secret of Akatsuki wouldn't spill.

Most Akatsuki members prefers reporting to him than going directly to their leader, Pain. His split personality sometimes can be a bit ridiculous particularly when talking. But having two personality comes handy particularly when you can perform jutsu and be a lookout at the same time. Amazing, right?

Zetsu's talent isn't limited to multi-tasking, though. He also has the ability to merge in ground and travel to another location almost instantly. He's a human recorder as he can record events for later viewing of Madara Uchiha.