Stocklin has played leading roles in feature films including Donner Pass (2011) and The Bad Guys (2015). He also appeared on television in recurring roles on Mistresses (2013) and Stalker (2014–2015), and he guest-starred on The Vampire Diaries (2011), Bones (2014) and Timeless (2018), among others. He has also appeared in national commercials for Marmot, Apple, Hyundai, Mazda and McDonald's.
In 2016 and 2017, he co-starred in the Netflix series Haters Back Off, opposite series creator Colleen Ballinger, whom he married in 2018. Stocklin appeared in two 2019 episodes of the Netflix series Lucifer. In 2021, Stocklin and Ballinger, began a weekly podcast titled Relax! with Colleen and Erik. The same year, he appeared in a recurring role in the television series Good Trouble.
|2011||The Vampire Diaries||Stevie|
|2016-2017||Haters Back Off||Patrick Mooney|
- Erik Stocklin's first wardrobe fitting had to be done over Zoom due to COVID-19 protocols. In fact, he wore his own clothes for most of the episode. It was also the outfit he wore while auditioning over Zoom.