Chase came along in the first book for the Hernandez series, We're All Animals, and has stuck around ever since. When we first met him, Chase is 18 years old and just graduating high school. Suddenly dumped by his high school sweetheart, he's hanging out at a house party, confused and depressed. When party guest Audrey sets her sights on him, she slips something in his drink to 'loosen him up', and the two end up hitting the sheets. Although it was automatically a regrettable mistake for Chase, it becomes more so weeks later when he learns that she is pregnant. From this point on Chase's life starts to spin out of control.
We continue to follow along with Chase as the protagonist in Always be a Wolf, and we later switch gears when Jorge Hernandez jumps in the driver's seat from that point on. But don't worry, Chase continues to go on for the ride.