Chainsaw Man Fandub
Cuba for Aki Hayakawa
Aki has a very stoic and mature attitude about him (I don't imagine him raising his voice to often), acting very serious when he works, however, beneath this cold, uncaring, and detached facade he is a caring individual who becomes attached fairly easily and hates to see others hurt. He is a reliable individual who will put his life on the line to accomplish a goal, his main one being to avenge his family. Also, he's a smoker if that's any help.
I imagine he has a medium-low voice that's not very expressive, more serious as a matter of fact, with a slight rasp.
[Intimidating;Threatening;Talking down to]
"The people who go into this job for shallow reasons end up dead, kid. Among my peers, the ones who became devil hunters just for money got killed by devils. All of them. The only ones still alive are those who have strong conviction."
[Wincing in pain/struggling;Determined]
"Yes, he's disgusting scum... I wouldn't blame you for stabbing him...but he's out to kill the gun devil...I can't kill the gun devil alone... To kill that thing I need as many...devil hunters with the guts to confront it...as i can get!"
[Sad;Reflective;Determined]
"Whatever happens, I want Denji and Power to survive and be happy... My brother's death was my fault. I want the strength to change things this time... Ms. Makima, I'll make a contract with any devil, please...help me..."
This is pretty good. I especially liked the last half of the second line and the third line. What I will say is that the first line could sound a little less expressive (he's pretty cold at that part of the story), there could be a little more "oomph" near the end of the second line and more build up to that last word. There could also be more build up in the third line to that emotional voice break but all in all, I feel like you were pretty close with the third line. (Also, I appreciate the sound effects at the beginning)