Rubber Soul is a medium-height curly haired man, with his Stand granting him the ability to grow larger and to change appearance at will. He was hired by Dio with the promise of earning 100 millions as a reward for killing Jotaro. Rubber Soul does, however, have a rather disturbing personality: he is extremely rude and impolite, showing no respect nor mercy for people and animals, as they are beings that he only sees as food for his Yellow Temperance. He does not seem to be particularly intelligent, though he has a really bad temper: he wanted to ambush Jotaro with Kakyoin's appearance, but his unusual behavior blew his cover. Rubber Soul is also very violent: he attempts to kill a pickpocket by breaking his back, and remorselessly eats a dog under the eyes of its master with his Stand. In order to grow bigger, he did not hesitate to eat bugs either. From: http://jjba.wikia.com/wiki/Rubber_Soul
Kan Yu is the sadistic field commander of EX-10s mercenaries, and treats his subordinates with cruelty. He is suspicious of Chirico's motives and take an almost instant dislike to him.
A leader of a nation conquered by Digald known as Zuuri, he is well known to Digald forces, and is hunted by them wherever he travels. Nonetheless he is patient with those he encounters and agrees to help Ruuji after his village his attacked and its generator damaged. When Digald surrounded his castle, he surrendered because he was concerned for loss of life during combat; but he regrets this decision, as he believed it allowed Digald to spread. After a life decision, Ra-Kan decided to restart the war against Digald by creating, amassing, and organizing a Digald Suppression Army. Zuuri was rebuilt in a new location and since prospered peacefully. With Diglad spreading their forces, he created a base from there. He dispatched the group around the continent in hopes to gather larger forces. After many difficult trials in getting the army organized, the army eventually succeeded in fighting against Digald. Eventually though their group realized it was Jiin they were really after and even joined forces with defected Digald troops. While fighting Georg, Jiin fired his gravity particle cannon and was presumed KIA; Georg's shields on BioTricera actually protected him and he returned in the climatic battle to face Jiin. There was no epilogue to explain what happened after Jiin's defeat, but it can be assumed that he and Mii returned to their kingdom to start rebuilding.