The Prince of Destruction
Prince Alexiares fully merged with Zagreus
When Alexiares killed his father the chaos completely took over him allowing the evil God of destruction Zagreus to pass into his world take over his body and merge with him. The Prince could not handle the Gods power & desire for destruction so he set out to destroy Azzaro and build it up in his order.
When Zagreus merged with Alexiares he forged his weapon and some of his armour out of King Azriels unbreakable golden armour.