The stolen card was known as the "Ultimate D Card". Aster made it his business to find this card in order to avenge his father.
The "Ultimate D Card" was "[[Destiny Hero - Plasma (anime)|Destiny HERO - Plasma]]", while the "Final D Card" was "[[Destiny End Dragoon (anime)|Destiny End Dragoon]]". Aster was able to retrieve the former card after defeating the D. "Destiny End Dragoon" was initially stolen by [[Mike]] in the fourth season but it was retrieved by Jaden and [[EsmeraldaEmeralda]] during a Duel that Mike organized and returned to Aster.
== Relation to other "HERO" monsters ==