Andrew Sims was a member of staff at MuggleNet and the lead host of MuggleCast, where he regularly podcasted with Laura Thompson, Matt Britton, Jamie Lawrence, Eric Scull, Micah Tannenbaum, Ben Schoen, Elysa Montfort and Mikey Bouchereau.
Andrew left MuggleNet in 2011 to work full-time on his new website, Hypable. Hypable covers a variety of fandoms, one of which is Harry Potter. He is still the lead host of MuggleCast, with co-hosts Laura Thompson, Eric Scull, and Micah Tannenbaum. He also hosts #Millennial podcast, and works as a podcast editor.