Ran Izumii

Ran Izumii is a character in Durarara!!. He was the former leader of the Blue Squares, until he was thrown in jail for kidnapping Saki and break her legs. He is also the older brother of Aoba Kuronuma.

In the past, Ran was always Jealous of his little brother due to the fact that aoba always recieved more attention than him. Ran would frequently pick on him to vent and quickly fell into the wrong crowd at school, even taking up smoking. After Ran went a little too far with picking on Aoba, his brother set his room on fire which the parents blamed on Ran's smoking. A few years later, after their parents divorced and Aoba went to live with their mother, Aoba called on Ran once again to ask for a favor. Aoba told Ran about a gang he made, the Blue Squares, that was quickly getting to large to control since there were adults who started joining up. Ran knew Aoba was trying to use him as a figure head but agreed to take over as leader since he thought he could surpass Aoba somehow. Not long after, Izumii got into a fight with another gang called the Yellow scarves and started to lose when Masaomi Kida started going to Izaya Orihara for help. Ran and the others eventually decided to kidnap Saki Mikajima, Masaomi's girlfriend, to lure him into a trap but were thwarted by Kadota and his gang who betrayed Ran and saved Saki. Ran and most of the blue squares were arrested after that.

A few years after, Ran is finally released from jail and gets an invitation to meet Izaya Orihara at his office. Izumii accepts and meets Izaya along with several others who he doesn't recognize. Izumii states that he is there to get revenge on all the people responsible for putting him in prison. The people topping the list are: Aoba, Masaomi, Kyohei and his group, along with Izaya himself. However, Ran states that he is willing to work with Izaya if it will get him to the other people on his list.

In volume 09, he participates in the rescue of Izaya after he got kidnapped by Amphisbaena and Heaven's Slave. He calls the leaders of the groups, "Earthworm" and Shijima, and claims to be the real Izaya and that the person they captured was a fake. Earthworm unties and unmasks the person they have on the chair to reveal...Izaya. Izumii, along with Mikage Sharaku and several members of the gang, Dragon Zombie, bust through the door and incapacitates Earthworm's and Shijima's subordinates. Earthworm attacks with two broken bottles but Ran easily defeats her and is about to rape her but is stopped by Mikage. Ran stops but says that Mikage owes him a favor and leaves, seeing that he was no longer needed at the time.