Master Crest was Lin's master in Max 's time. He spent his life pursuing his dream of becoming a Sage, a person who could supposedly protect others just by being there. While working towards this goal and teaching Lin to be a sorceress, he also looked after the lighthouse near Balance Valley and its the crystal that resided there. By the time Max and Monica are able to reach the Lighthouse he is already dead. The two have to restore Balance Valley so that it will become the temple that is situated there in Monica's time.