Jack was around eight years old when they got their powers. He was very arrogant. Jack started out with the molecular power. He could expand into a cloud and shrink into a compact thing. He got Alex's gravity power when they traded. He is ok, but not one of my favorites. Jack was into sports. He played baseball on a Little League team and was a sports lover. He hates school. Alex and Jack argue a lot. Jack gets sick of Alex bossing him around. Jack and Julie do not exactly get along either. I guess it is sibling rivalry. I am still working on these Bio's.