Tell us why on the comments. Here's a quick thought about the relation between the races and the classes: -Titans are Exo: The great power that a Titan holds can only mean one thing: Machines -Warlocks are Awoken: Powerful magic? floating over the horizon? quick healing? That's an alien for sure. - Hunters are Human: Combat, rifle and knife skills, stealthy and deadly are all results of a futuristic soldiers with high tech on their side. Now, this is my opinion, you can choose freely as you like.