Career
He was the first person to voice King Graham, protagonist of the King"s Quest series, in King"s Quest V and King"s Quest VI. In the former he also played a harpy. In the latter, he also played Shamir Shamazel, Oxymoron, Druid, and a Guard Dog. He has also reprised the role of Graham in the unofficial fan-made remakes King"s Quest I, King"s Quest II: Romancing the Stones, and King"s Quest III Redux by Agriculture Department Interactive and King"s Quest III by Infamous Adventures.
He created trivia for the King"s Questions quiz game.
Mandel was in 2012-2013 employed with Replay Games where he, in cooperation with Sierra veteran First Rate (at Lloyd's) Lowe, worked as a designer and writer on Leisure Suit Larry: Reloaded and Fester Mudd: Curse of the Gold. He quit the company some time after the release of Reloaded.
In January 2014, he contributed to the independent adventure game, Serena, wherein he voices the game"s protagonist.