Rasbis Grumpledin grew up a nobody. His younger years were spent mostly doing insignificant things in a small town called Pao. The place was only known for its excellent bread and comfortable inn. It being the last stop before a long and dangerous journey through the dark forest, many adventurers rested up and prepared there. His family strived for very little, content with just getting by. If they ever wanted something more they (and he) were taught to pray for it, should you deserve it the divine will grant it. As time went on this became unacceptable to Rasbis. No longer content with waiting for his prayers to be answered, he left with an adventuring group ,that he payed using all his saved gold, to take his fate into his own hands.
Carrying his divine symbol still, not to pray with any longer, but to remind him to never rely on anyone or anything to get what he wants. Over time his poorly hidden distaste for religion earned him some enemies but mostly just annoyed looks. Content with his studies however, he did not mind the general solitude.
Years later, after traveling across the lands to learn from all the different colleges of magic, he decided to make his way through the portal, to a new world and new adventure. Here he can apply his magical knowledge, grow in power and perhaps start a college of his own.