It was on Dantooine that I would encounter Falon Grey, one of the last of the Jedi, and learn the true identity of my genetic father. I would also be reunited with X1, this time on opposite sides of the battle lines.
—X2
The Battle of Dantooine occurred during the Imperial Period when an Imperial strike force attempted to find and kill Falon Grey, who was hiding on the planet. The clone X1 spearheaded the assault, but X2 joined the rebels inside, taking a different path from his brother.