Arcanus

Ace is an antagonist in Golden Sun: Dark Dawn. He appears to be aligned with Spade and Heart as part of Tsaparang - the name "Ace" is another playing card-related term, which may denote that he is considered part of their team or unit.

Ace appears identical to Alex from previous games, but he does not appear thirty years older like other characters from past games such as Isaac. Reasons for this are up to speculation. His introductory bio states that the Warriors of Vale seem to know his face, but despite that his "true identity and nature are shrouded in mystery." His actions and those of Matthew's company will together have a great impact upon the fate of the world.