Also, as for what the "inspiration" for the characters is for ROYL, I've also kind of changed my mind on that. For two of them, at least. "Purple" and "Gray" both had a very clear inspiration from the start, but "Blue" and "White" didn't.
Off the top of my head, I said "Blue" was based on Odysseus. Looking back, though, it's infinitely more appropriate, both to the character and their arc, to say that they're based on Ajax.
Similarly, I said "White's" closest inspiration would be Jing Ke. Honestly, their inspiration is by far the loosest, but I think it would be more appropriate to say that they're sort of an amalgam of five of the famous assassins of the Warring States Period of China.
Incidentally, those five assassins, also known as the Cike ("stabbing guests") are kind of interesting in their own right; interesting enough that Sima Qian saw fit to mention three of them in their own section of his great historical work, the Shiji (often translated as the "Records of the Grand Historian," though that's not quite right for multiple reasons).
First is Zhuan Zhu, who at the recommendation of the famous statesman Wu Zixu was employed by Prince Guang of Wu to assassinate his uncle, the tyrant King Liao, who he felt had robbed him of his birthright (as Guang was the son of King Yumeng and technically the throne should have been his). Paranoid as tyrants often are, King Liao allowed very few people to approach him. Zhuan Zhu spent years becoming a famous chef specializing in a dish he knew was King Liao's favorite (all we know about it is that broiled fish were involved). Eventually, he was hired to be King Liao's chef. One day, while approaching the king with a dish of broiled fish, Zhuan Zhu withdrew a small knife he had hid inside the fish's body to keep the guards from finding it to kill King Liao. He was killed by the guards, but Prince Guang ascended the throne as King Helu of Wu, who became famous and led his state to greatness and prosperity (and also employed as a general the man we know as Sunzi, or Sun Tzu). Folklore has named the knife Zhuan Zhu used Yuchang, or "fish intestines." Zhuan Zhu (and King Liao) died sometime around 515 BC.
Second is Yao Li, who was also recommended by Wu Zixu to assassinate someone King Helu of Wu needed to die, namely Prince Qingji, a kinsman of King Helu who had been a thorn in his side for years before fleeing to the enemy state of Chu, then tried to foment a coup within Wu with support from the State of Yue. To gain Qingji's trust by making Yao Li to seem like a wrongfully convicted man who had been wronged by Helu, on trumped up charges Yao Li's wife and mother were killed and his right hand cut off, and he "fled" to the State of Wei, where Qingji was staying at the time. He quickly gained Qingji's confidence to the point that he was allowed on fishing trips with him, and even was allowed to ride in his boat. While they were out fishing, Qingji used a fishing spear to kill Qingji, then committed suicide to reunite with his wife and mother. This happened somewhere around 475 BC.
The third Cike is Yu Rang, who served as a family-minister to the clans of both Fan Jishe and Zhonghang Yin, who were two of the six ministers who made up the most powerful men in the State of Jin. His original employers didn't really appreciate Yu Rang, so he left to serve another of the six ministers, Zhi Yao, who he got along with much better. This was lucky for him, because the other four minister clans (Zhi, Zhao, Wei and Han) teamed up to wipe out the Fan and Zhonghang clans soon after. But Zhi Yao got greedy and tried to establish himself as the leader of this little coterie and got killed for it; one of the ministers, Zhao Xiangzi, turned Zhi Yao's skull into a drinking cup as a final insult to the man. Yu Rang fled the short-lived civil war that took his employer's life and swore revenge. He changed his name and became a low-ranking servant in the King of Jin's palace. One day, when Xiangzi was visiting and intended to use the bathroom, Yu Rang got wind of this and hid in their to try to kill him. Somehow, Zhao Xiangzi had a bad feeling and had guards search the bathroom, finding Yu Rang with a sword; Xiangzi didn't kill him though, impressed with his virtue (and probably also pretty sure this guy wasn't really a threat).
Yu Rang wasn't dissuaded by failing and being spared. To keep Xiangzi from recognizing him, Yu Rang disfigured his skin by covering it with lacquer to create scars and sores. He became a beggar in the market, and only his wife could recognize him because of his voice; that wasn't good enough for Yu Rang, so to change his voice he swallowed charcoal. A friend of his asked him why he was going to such lengths instead of pretending to be moved by Xiangzi's mercy, joining his household, and using his skills to gain his trust. Yu Rang's reply was that his motive for revenge for Zhi Yao was loyalty for the man who'd treated him well; if he joined Zhao Xiangzi's service, was treated well enough to gain his confidence, then killed him, he'd be a hypocrite.
One day, Zhao Xiangzi was crossing a bridge with some of his men; Yu Rang was hiding under the bridge with a sword. The horses got spooked by his smell, which tipped Xiangzi off and his guards found Yu Rang and apprehended him again. Somehow, Zhao Xiangzi recognized him by his eyes. Though sad that Yu Rang wasn't willing to work for him, Xiangzi felt he had been merciful enough the first time, and ordered his men to kill Yu Rang, though he allowed Yu Rang to stab his robe three times so he wouldn't go to his deceased master empty-handed.
The fourth is, oddly enough, the most well-known, Jing Ke. Around By 227 BC, the State of Qin was the most powerful by far, and had absorbed the states of Han, Zhao and Wei. Jing Ke was from Wei, a noted scholar and swordsman. He fled Wei when it was conquered to the State of Yan, where he entered the service of Prince Dan, who had spent time as a hostage in Qin and knew they would attack him sooner or later. With Jing Ke, he hatched a plot to assassinate King Zheng of Qin to destabilize it. Prince Dan gave Jing Ke the sharpest dagger he could get his hands on and the best poison available to him to coat it in, and also offered Jing Ke an assistant in the form of Qin Wuyang, grandson of the famous Yan general Qin Kai and a young man who had killed his first man at age 13. With these in hand, Jing Ke took a visit to Fan Wuji, a Qin general who had defected because of perceived mistreatment and was burning for revenge against Qin. It was to such an extent, in fact, that when Jing Ke laid out that he planned to use the pretext of being an emissary of Yang's surrender, carrying both the head of the general and a map of Yan, that Fan Wuji killed himself so the plan could be carried out.
King Zheng was, much like King Liao centuries before, very paranoid about letting anyone approach him. But he made an exception for Jing Ke - but not Qin Wuyang, who turned out to be a bit of a chicken when the big moment came and started sweating profusely and acting nervous, putting King Zheng on his guard. Despite this, Jing Ke almost pulled it off, grabbing at King Zheng's sleeve and ready to stab him... except the sleeve tore, causing Jing Ke to lose his balance. Even then, it might have still worked: because of Zheng's paranoia, none of the staff or ministers in the building were armed, and all the guards were outside and would take a while to get to him. Plus, his own sword was ceremonial, so it was too long to draw while fleeing on foot.
Keep in mind, "King Zheng" is the man we know today as Qin Shi Huangdi, the first true Chinese emperor. History as we know it happened because Xia Wuju, the royal physician, threw his medicine bag at Jing Ke, which distracted him long enough to let Zheng pause to draw his sword, which he used to stab the assassin in the thigh, immobilizing him. In desperation, Jing Ke threw the dagger, but missed, and was stabbed eight more times before finally dying. The guards caught Qin Wuyang, who tried to flee the moment things turned pear-shaped, and killed him as well. Obviously, the State of Yan didn't exactly fare well as a result of this, either.
You might wonder why I say it's odd that Jing Ke is the most well-known. "Obviously," you say, "it's because he tried to kill one of the most important guys in Chinese history, and almost pulled it off!" Well, yes, but Jing Ke wasn't alone in that. Let me tell you about Gao Jianli. Gao Jianli was a native of Yan and a friend of Jing Ke's; obviously, neither of those were a good thing to be after Jing Ke's failed assassination, and so Gao Jianli changed his name and starting working as an assistant at a wine shop. A master of the Chinese lute, Jianli often heard the owner's family and guests playing it while he was working, and would critique their technique. Eventually, the owner asked Jianli to put his money where his mouth was and play himself; his playing brought everyone who heard it to tears.
Eventually, stories of Jianli's skills reached the ears of King Zheng of Qin. He invited him to come over to play for him, which he did to great acclaim, but once it was over, a man in the court who was also a native of Yan recognized him and revealed his identity. Unwilling to kill such a great musician, King Zheng had Jianli blinded, but hired him on as a musician.
Gao Jianli worked as King Zheng's private musician, earning a great deal of praise; eventually, King Zheng started relaxing his guard around Jianli, allowing him to approach closer so that he could hear the music better. Secretly, Jianli had reinforced his lute with lead to make it heavy enough to be used to bludgeon a man to death; when King Zheng finally allowed him close enough, he struck. Unfortunately, being, well, blind and this being reality and not an anime or a martial arts flick, Jianli missed and was, of course, executed.
-x--X--x-
Incidentally, the other two assassins in Sima Qian's "Biographies of Assassins" aren't quite assassins as we might think of them.
Cao Mo was actually a general of the State of Lu (which has a special prominence in Chinese culture because it was the birthplace of Confucius), with kind of a mixed record; on the one hand, he became a general in the first place because of his bravery and loyalty. On the other hand, he wasn't very good at actually being a general, and lost three battles to the State of Qi (who to be fair were pretty boss at the time). Eventually, Lu and Qi agreed to a treaty (with rather bad terms for Lu), but when the emissaries met to sign it, Cao Mo suddenly grabbed Duke Huan of Qi (this was before they abandoned pretenses of loyalty to Zhou and started calling themselves kings) and held a knife to his throat, hijacking the negotiations to force Duke Huan to alter the terms to return all the land Lu had lost, and then to sign the altered treaty. Amazingly, this actually worked out swimmingly for Cao Mo and Lu (though it still got conquered by Qi later).
Nie Zheng, on the other hand, was a man who lived in the State of Han (no relation to the Han Dynasty), one of the successor states to the State of Jin. Convicted of murder, he went into hiding as a butcher with his mother and older sister. However, he was good friends with a government official, Yan Zhongzi, who visited Nie Zheng hoping to recruit him to kill Xia Lei, one of Han's highest officials who was notoriously corrupt and treacherous. Zhongzi knew Nie Zheng as a capable and enthusiastic fighter and a loyal friend, and on top of that offered plenty of money. But Nie Zheng, though he wanted to do it, refused; he had a duty to his ailing mother and would very likely die whether he failed or succeeded, leaving her and his sister alone. Years later, however, Nie Zheng's mother died, and with filial piety no longer an obstacle, he immediately took up Yan Zhongzi's offer, which was still standing.
Nie Zheng's approach was as simple as can be: he walked in with knife in hand and killed everyone who tried to get between him and Xia Lei, then the corrupt statesman himself. Once it was done though, he used his own knife to mutilate his face so that it wouldn't be recognized, then killed himself.
Unable to identify him, the authorities hung the mutilated corpse in the square, offering a sum of gold to any who could identify him. When she heard of how the assassination had happened, Nie Zheng's sister, Nie Rong, immediately knew who had done it. She also realized that Nie Zheng had mutilated his face and killed himself to protect her, and that in doing so he had surrendered his aspirations; she knew that, his entire life, he had wanted to be a great hero who did some great deed, and that this motivated him just as much as loyalty to his friend.
So, Nie Rong walked into the square and firmly declared that the body was that of her brother. She told Nie Zheng's story to the assembled crowd in its entirety, then killed herself in front of her brother's body.