Matthew Krol is a voice actor, producer, and showrunner with over a decade of experience in television and a love for the Oxford Comma. He is the Executive Producer, Narrator, and Co-Owner of the animated YouTube Channels "Extra History" and "Extra Credits", that cover History, Literature, Mythology and Video Game Design.

Across both channels, he has voiced over 850 episodes and the channels currently sit at a combined billion+ views. He also keeps busy co-hosting his eight-year-running podcast erroneously titled: “The Only* Podcast About Movies” and DM’s a Curse of Strahd Dungeons and Dragons Campaign he just won’t shut up about.