Dr. Shamal

Dr.シャマル

A deranged womanizer who propositions every attractive woman he encounters. Although frequently unsuccessful, he is constantly observed hitting on one woman before immediately moving on to proposition the next woman who passes by. Setting aside his usual demeanor, Shamal is actually a notorious assassin known as "Trident Shamal," as well as a renowned doctor who refuses to treat men. He employs trident mosquitoes to infect his targets with lethal illnesses. Because he naturally contracts viruses and diseases with ease, he carries 666 pills containing mosquitoes infected with deadly diseases. He claims to be infected with 666 diseases, yet he remains alive because all his diseases cancel each other out (for instance, if he has a disease that rapidly lowers body temperature, he also has one that raises it).
Shamal is also the individual who introduced Hayato to bombs during his time working for the Gokudera Family. Hayato initially sought to learn how to use the trident mosquito, but Shamal taught him how convenient it is to carry mid-range weapons.
During the Vongola Tournament arc, he served as Hayato's home tutor, though he primarily just watched Hayato improve his skills while throwing paper airplanes as targets.