"Thirsting for revenge, Jack Frost donned his Ice Vest to become the dark hero known as... Frost Ace. What will his sorrow frozen heart choose? Will it be Vengeance? Mercy? The gears of Fate continue to toy with him..."
—Strange Journey Compendium
He first appears as a lowly Jack Frost in Sector Carina's basement, mourning his family. He begs the Protagonist to get him an Ice Vest so he can grow and get revenge; upon obtaining it, he grows into Frost Ace and grants his benefactor the Frost Ace Special Fusion combination and the Frost Cannon, before leaving to seek vengeance.
Its Special Fusion consists in Jack Frost, Tam Lin and Power.