Steelhorn re-joined the ranks of The ABC Warriors in place of the deceased Morrigun, in a bid to increase peace on Mars after Cobb's transformation sparked a civil war. While travelling with them to New Sidona to fend off Confederacy soldiers, Steelhorn was taken out by the rival Shadow Warriors, melted to a sludge once more. Due to occult activities by Deadlock, he was reborn again in a diamond form and brought about the ABC Warriors' victory.
