Team 8 as Shinigami Captains

Kiba's cleaver grows more powerful the longer a fight drags on, the blade growing redder and redder as it does. At its strongist, he can launch dogs made of red energy towards his opponents.

Hinata's rapier can launch pullses of power with each thrust. She can even repel or cancel out incoming attacks.

Shino's staff/club can release bugs that can eat away at most materiels, as well as poison or paralyze enemies.