Mephisto was the player who gave his name to multilooting. I don't know if he was the first to use it – I suspect not – but he was the one who popularised it and those who later used the technique named it after him. It was a long time ago, though.
Gharik's Forge. Yes. I remember when I first found that place, and assumed that it was easy because it was in New Sorpigal. Oops! Reload time . . . I reached the first bridge, but that was as far as I got. Nowadays, I know better! Additionally nowadays, I always maintain a Lloyds Beacon in the first room after my party passes the door opened by the Gharik's Forge key – just in case.