Zach Hadel is a YouTuber and animator also known as PsychicPebbles. Hadel got his start as a flash animator and received praise for his work on the site "Newgrounds". He was an early adopter of YouTube and began posting under the moniker PsychicPebbles. PyschicPebbles' podcast Schmucks ran for several episodes and involved interviews with YouTubers such as JonTron, H3H3, and Vsauce. He also hosted the podcast SleepyCabin with his content-creator friends. Hadel has appeared on other podcasts to discuss his career and his work as PsychicPebbles including his interview with Vsauce2 on The Create Unknown and a guest episode of The Official Podcast. Though he doesn't like to show his face (preferring to use his animations as avatars), Zach Hadel has often appeared on panels at conventions to discuss animation.
In 2020, Zach Hadel created a cartoon for Adult Swim called Smiling Friends.
Zach Hadel's experience as a voice actor and podcaster has showcased his characteristic "congested" voice.