For Yuga he has a very flamboyant teenage voice in around the mid-mid high range! He is voiced by Joel McDonald!

Character Description:

Yuga is a vain and prideful person, thinking of himself as superior to the rest of his classmates, especially in regards to his Quirk. He exhibits extremely flamboyant mannerisms, is fond of posing and likes to grab the attention of those around him, although he frequently gets ignored. His expression rarely changes from a closed smile, even while he speaks or gets hurt, and he's also prone to getting upset if interrupted or questioned. Yuga's sentences often end with a star (☆) symbol, indicating a lofty tone. He also tends to give the impression that he's French, occasionally implementing French words into his sentences. He wants people to notice him. He looks up to Izuku as a role model.

However, this persona is shown to be mostly a farce, as Yuga holds severe insecurities about his Quirk, and in reality, he doesn't see himself as above anyone else. In fact, he appears to think of himself as different from everybody, due to the "defective" Quirk he was born with. Yuga has been struggling with this since his childhood and wishes to become "normal" one day.

Yuga does possess a compassionate side and is shown to sympathize with Izuku Midoriya due to the both of them having what he perceives as highly self-harmful, uncontrollable Quirks, although the way in which he displays this sympathy initially startled Izuku. Izuku has stated that he’s never been able to read Yuga due to his unpredictable nature, although he still ended up befriending him.[2][3]

Yuga is also easily frightened by danger and prefers to hide rather than fight, though he can still help out a friend as long as he remains safe and isn't above sacrificing himself, which was seen when he attackedMr. Compress from taking Fumikage Tokoyami and Katsuki Bakugo. This brave act nearly put his life at risk but ended up saving one of his classmates from being kidnapped, which highly contrasts his usual self-centered attitude.[4]