Yuga Aoyama

He is the most flamboyant student at U.A., who talks pridefully about himself and tries to grab the attention of those around him, in vain. To add to his exuberance, he has French heritage, and the French language is considered to be a romance language. His expression rarely deviates from a smile, even when hurt. His mannerism includes always smiling, acting luxurious, posing, showing vanity, and adding French words to his sentences. To make him seem even more stylish, he's always looking at the screen, breaking the 4th wall (unless he's talking to somebody).

However, it was revealed in Season 4 that this personality is mostly a façade. He acts prideful to hide the fact that he truly feels insecure. He views himself as below everyone else in Class 1-A, due to his insecurity about having a defective quirk. Due to his thoughts of himself, he is naturally a loner, who lacks social skills. Deku has stated that Yuga's social skills are very unreadable, as when he appeared to be creepy, he actually was trying to be nice.

His confidence is also fake. While he appeared confident in his fight against classmate Mina Ashido, he likely had no confidence at all. She beat him easily. When he's showing his true colors, he'll prefer to hide rather than fight, as shown when he hid from the villains in a bush during the Forest Training Camp Arc. However, he will be willing to take any chance to save a comrade, as shown when he gave Mr. Compress a surprise attack with his beam in their mission to retrieve Bakugo from capture by the villains.

Eventually it was revealed that Yuga's insecurities stemmed from him being a pawn of All For One forced to do his bidding under the threat that he would kill his parents should they refuse. This caused his parents to constantly force him to do treacherous things out of fear for their lives, and Yuga was always torn between saving his parents and being with his classmates whom he genuinely grew attached to, which was why he saved Katsuki in the first place and laid down the cheese as a discreet cry for help.

He even believed that when All For One was captured, he would be free, have the chance to live happily alongside his friends and be a true hero. But in the end, All For One's treatment of Yuga made him even more insecure than before, to the point that he saw himself as nothing more than a rotten villain.