Name: Yucca / Koro-sensei (previously)

Age: 21 y/o (when he transmigrates into the body); 23 y/o (when Canon storyline begins)

Occupation: A hitman; The Varia's Cloud Guardian

Flames: Sky (the body's); Cloud (the soul's)

Affiliation: Vongola (As part of the Varia); Millefiore/Gesso/Giglio Nero (As a Future member and Byakuran's brother)

Biggest fear: He is naturally scared of occult (ex-life), Women with exaggerated curves make him sick in the stomach (body) 

Trivia:

-His eye color (purple), hair color (white), and name (Yucca) all served to foreshadow his relationship with Byakuran and the Millefiore as a whole. His name, Yucca is the name of a white flower

-The initial concept was: "I want the main character to be against Tsunayoshi's group"

-The ability to see his 'death' was supposed to be explained by his relationship with Byakuran. In the first drafts (when Yucca was part of the Canon gang and wasn't Koro-sensei) he had a plethora of diaries or stories, written by his younger brother about a guy who died again and again. The 'guy' was the Yucca of every other dimension and the way he died each time. By reading the diaries, Yucca unconsciously gained some insight on his many deaths and was able to dodge them

-In the first drafts, Yucca and Dino were supposed to go Canon while Yucca would join the Cavalonne business instead of the Varia

-In the first drafts, the crossover was much more present, to the point where Koro met some of the 3-E students in Namimori, namely Itona Horibe who was supposed to be part of the Kokuyo Gang or Ritsu which he created

-Yucca suffers from multiple personality disorder. Inside his mind cohabitates 'Koro' and 'Yucca' both were created by Koro after he transmigrated over and are half of his personality. The 'Yucca' of the mindscape is Koro's representation of the previous Soul, he only realizes the truth at the end of Future Arc when Mukuro points it out