King_Of_The_Abyss
Tone is a bit weird. But that might just be me personally. I would personally like it if tone was a bit more solemn to reflect the horrible time Griff went through earlier on in the story. Not super solemn as Griff is portrayed to be a ray of light flickering in the abyss, but it feels as though his past experiences had not affected him much at all. To go back to the light flickering in the abyss... there's a whole load of light and very little abyss in sight. So my suggestion would be to keep the funny and light side of Griff inside his head. Of course you would have to slowly ease into it so it would not seemed force, maybe have more accidents happen with his friends that are close shaves that would be normal happenings for veterans but Griff being a newbie would start becoming more quiet. Not fully quiet as there isn't enough of a reason to do so but maybe he starts swearing in his mind only, small surprises he freaks out in his head but doesnt do much of a reaction in the real world and the like. I may have though mistaken the tone you wanted to go towards for the story though. If so, and you want your character to be more light than abyss then you are doing great. Just add more reasons for him to be light and you are set!