Sully is the commander of defense of the TwinTail Guard. He's very kind, supportive, and encouraging, everyone loves him. Many are intimidated by his size and strength, however he's simply a big softie, he is seen as the big brother of the military. Captain Bento's favourite, he likes to have him around. Sullivan and Yuni are best friends, despite their opposite nature, they often think alike.  They're a magnificent duo in battle, but it's been a while since.