sentences:  As the Vongola IX's most trusted member, he becomes Tsuna's home tutor and trains him into becoming a Mafia boss using torturous ways.He often shoots Tsuna with special bullets that enhances his abilities; these bullets are created inside his shape-shifting chameleon "partner" named , who usually sits on Reborn's fedora.No matter how strong the emotion, Reborn always keeps a straight face and handles many situations as calmly as possible.