Mega-Dexterity is a measure of the ability to move faster and be more flexible than a normal person. Only novas are known to have Mega-Dexterity.
Mega-Dexterity in PlayEdit
Each dot of Mega-Dexterity adds one to a character's Initiative, Run and Sprint scores. If two characters have the same Mega-Dexterity and one has the Mega-Wits Enhancement → Enhanced Initiative, then that person goes first.