 He shouted boasts of his recovery and his opponents’ inevitable defeat, but it was he who met his demise when Surtur used the remains of the Black Pyramid as a weapon against the mighty Thor.Throwing the citadel at Thor, the Black Pyramid was destroyed by Thor's mallet, Mjolnir, leaving Grog and his remaining forces to be crushed inside.Grog was later sent to Earth by Seth with Gog, Magog and Scarab to hunt down an emotionally battered Thor, who just killed his grandfather Borr.