Reborn is the Arcobaleno of the Vongola Family who was sent by the previous Vongola boss, Vongola IX, to train Tsuna into becoming a fine mafia boss. No matter how strongly he feels about a situation, Reborn always keeps a straight face and handles all and every situation as calmly as possible. Since he isn’t really an official member of the Vongola Family, he isn’t allowed to interfere in battles although he is allowed to defend himself should he be targeted at. Despite his rather cute form as a baby, he is as deadly as hell when it comes to a fight since he was actually a very famous hitman back in the day. Reborn is the bearer of the Yellow Pacifier of the Sun.