Boomer, considered the "dope" of the group is a bit of an airhead. Out of the three brothers, he's typically seen as the black sheep. He's not as strong as his brothers, nor is he as smart, but boy does he have passion. Boomer is an A-Class idiot with the strength of a professional heavy weight wrestling champion, as he along with his brothers are super human toddlers. He's the living definition of failing upwards, as mostly anything he does somehow ends up messing up him and whatever evil pranks his brothers plan to pull. And although Boomer get's berated by his brothers for being an idiot consistently, he loves them both to death. 

He himself is not very confident in his abilities, both with regarding his super powers and socially. He can be a bit anxious given the situation, sometimes stuttering or tripping over his words. Social interaction isn't something he's very well versed in, and it shows. 

Boomer sounds similar to characters such as "Izuku Midoryia" from My Hero Academia and "Mikey" from Tokyo Revengers

He's sounds very nasally, and typically has a very mean and rude attitude when speaking. He sounds like a doofus and a nerd, but a really mean one. Acting tough is his strong suit, as he tries to act like his other brothers. But in reality, he's just a dumb ol kid with superpowers.