"Australia Opioid epidemic has gotten out of hand, a secret American lab researching the use of Crack on Australian spiders and other venomous animals became array. The Venom of these animals mixed horribly in the experiments and created much more maligned creatures, ones that instead of completely killing you on a bite they turn you into a crack addicted Zombie. As expected, they escaped, and started attacking everyone in Australia! They don't just eat people, THEY SMOKE CRACK.
In the face of this event, Terrance and Crew Buckgram, who are expert crack addicts, grew some immunity to the venom. Unfortunately for Crew, his immunity wasn't enough when an attack broke out at their base... but his Crack resistance was so Unique that it turned him into a conscious Crack head zombie! Though he did end up losing his legs in the process. Now Him and Terrance cruise together through Australia in order to kill every single crack head zombie, not because it's the right thing to do, but because they have crack they could smoke."
This was a wild character and World Building idea, one that I hope to continue in the future as a comic of some form. I do want to work a bit more on Terrance as he is a bit too clean looking for a Crack head, but hey, it's still not half bad.