Kusuna

Naruto Shippūden the Movie
Kusuna is Yomi's second in command of their team for their quest to destroy Shion and release the demon Mouryō. Before the mission began, Kusuna was infused with Yomi's dark medical ninjutsu so he could act as a catalyst for his team. Kusuna confronts Shion preparing to kill her but Naruto stops him and a battle starts. Kusuna orders Gitai, Setsuna, and Shizuku to use their Earth Fire Wind combination as a diversion while he went after the running Shion.

Kusuna catches up to Shion, but before he can land the killing blow Neji grabs hold of him and tosses him into a waterfall. Seeing that the odds were against him and he didn't have an opening to replenish his team's chakra, Kusuna flees along with his team.

Later, Kusuna and his team attack again, working to seperate Naruto and the others from Shion. As the plan seemingly works, Shion goes chasing after Sakura who is holding Shion. Kusuna catches up to Sakura and incapacitates before going after Shion. With his target now alone, Kusuna takes the opportunity to kill her, unaware that he actually killed Shion's bodyguard, Taruho, who disguised himself.

After learning from Yomi that Shitai was still alive, they return to finish the job. During another intense battle for Naruto and his team, Neji correctly deduces that Kusuna is the reason for their opponent's unusually high prowess in multiple elements. After tricking Kusuna's team to use up their dark chakra, Neji ambushes Kusuna and unleashes his Eight Trigrams Sixty-Four Palms, taking away the enemy's main source of power and finishing off Kusuna.

Abilities
As a medical ninja, Kusuna's duty in battle is support. Unlike regular medical-ninjas, his primary goal is to enhance his team rather than heal them. He can also use his medical ninjutus to effectively battle and kill his opponents.

Also being the second in command, Kusuna has also shown to be a capable leader and tactician. During the surprise attacks, he can quickly assest the situation at hand and effectively direct his team into a well-thought out counterattack.