Toxdil replaced with Deathfist Pawn?-West Freeport Tunnels
 

At 4AM game time I sold items to Toxdil. I went back to sell more items at 6AM and in his pace was a Deathfist Pawn. I led the orc to the guards to kill. At 8AM the usual guard spawned in Toxdil's place.

According to the Wiki Toxdil despawns at 5 am and the Deathfist Pawn can be one of the placeholders for the guard.