Alright. first off, that last drawing looked pretty good.
We now return to PROJECT TRIDENT HAIR.
Im going to take a stab at (no pun intended) the trident hair deal that seems to be going on here.
Since you seem pretty insistent on keeping the hair really tall and out there, then try to at least make it look a bit more organic. or, such as Invader rock said a whoooole while back, try to balance out the spikes by maybe having his hair spikey all over, but with the three main attractions up top there.
I doodled a Chris to show you what I mean. Now, Im honestly not one to talk when it comes to natural looking hair- for... obvious reasons... but hey, this is just advice from one weirdly haired guy to another.

add some waves to it, some organicness to it something, your latest drawing proves you ARE capable of it, so why not try it a bit more on the trident hair? make it actually LOOK like its been done up, rather than like his hair is literally a trident helmet on his head.
same goes for buzz saw Mc-frost tip hair. His hair actually, reminds me more of dreadlocks. I dont mean it as an insult, but unless thats the idea, then perhaps you should try splitting those large locks so they are not just big frosted spikes going around the top of his head.
Actually, try using the tablet to doodle him. that last tablet image was real good, and I liked the way you did that characters hair there... why not experiment with something like that for him?
Dont take any of that the wrong way, just throwing my very own 2 cents viewpoint your way.