dailykarnage answered:

Both characters have incredibly dramatic personalities, just expressed differently. D’jinn takes things fairly seriously, as he’s shown to be very passionate. Don Karnage likes being the center of attention. His passion is focused more on putting on a good show, but he needs everything to go exactly *his* way. So, trap those 2 together and you’ve got a very interesting dynamic.

Karnage makes for a great distraction, and D’jinn could use that to his benefit. You’ve got one showboating and bringing attention to himself, while the other can slip on by. But I can absolutely see Karnage refusing to take orders when a situation calls for some planning, or when they need to take things slow. After all, he’s still the feared, dreaded pirate captain, DON KARNAGE, and therefore, he knows exactly what he’s doing! D’jinn gets understandably frustrated with him, but knows that Karnage, while a bit reckless, is a fairly good sword fighter (even if all for show) and essential to their mission. That being said, if the goal they’re after is some type of treasure, Don Karnage is still very much a pirate. And i’m pretty sure D’jinn could very easily win a sword fight against him.