Zac Eubank (@arentweclever and @zaceubank) was an employee of Geek & Sundry and the producer of the company's Twitch channel, including Critical Role. His nickname on set and within the community was "Overlord", and he made frequent appearances in the pre-show, announcements, and post-show.
In Dungeons & Dragons Campaign Tips, Zac created and played a Dungeons & Dragons character for the first time, whom he named Snugglelord. He later reprised this role in Critical Trolls for Extra Life.
Zac left Geek & Sundry to accept a position as the CEO of a new media company, Hyper RPG, which livestreams role-playing games on Twitch. Upon Zac's departure, his brother, Lucas Eubank (@lucaseuspank), took over the producing role on Geek & Sundry's Twitch channel, before also leaving to join Hyper RPG.