I feel like Averax should be like a cross between 1d4chan's version of Kharn the Betrayer and the Doom Guy from the comic, but that's just me 
"WOO YEAH BABY, GONNA CHOP YOU UP" screamed Averax, bloody foam frothing from his rage mask.
"What are you babbling about, you lunatic?" asked the Cultist in an acid tone, nonplussed and without a hint of irony.
"HERE COMES THE PAIN WAGON, I GOT AN AXE TO GRIND AND YOUR BONES ARE MY WHEEL!"
"What does that even mea-arghhhblarghhhh!" gurgled the Cultist, as Averax buried his weapon deep in the man's chest.
Etc.
"WOO YEAH BABY, GONNA CHOP YOU UP" screamed Averax, bloody foam frothing from his rage mask.
"What are you babbling about, you lunatic?" asked the Cultist in an acid tone, nonplussed and without a hint of irony.
"HERE COMES THE PAIN WAGON, I GOT AN AXE TO GRIND AND YOUR BONES ARE MY WHEEL!"
"What does that even mea-arghhhblarghhhh!" gurgled the Cultist, as Averax buried his weapon deep in the man's chest.
Etc.