Sebastian Harper


 * For his Earth 3 counterpart, see Ryan Harper.

Sebastian Jackson Harper (セバスチャン・ジャクソン・ハーパー) is a main character in Ultimate. He is a businessman and the son of billionaire Frank Harper and Ava Harper, the younger brother of Avni Harper, the older brother of Mary Alice Forrester, the new CEO of Harper Enterprises, one of the founding members of the Legends, and the archenemy of Ghost, and later Brian Death.

Initially a rebellious child, Sebastian slowly matured and followed under his father's footsteps, but later lost his girlfriend to unknown assailants. More intent than ever to protect his city in order to never let anything like this happen again, he developed an exosuit to fight crime as Omega and was quickly recruited by Kate Fletcher and Hunter Bradley to join the Legends.

Stopping villains like Prometheus, Goliath, Ryan Harper, Rip Vega, Malcolm Dark, and the Shadow Reavers, Sebastian eventually retires as the team disbands but quickly regroup and is aided in his final battle with Ghost and the Brotherhood, avenging Janet's death and apparently becomes the CEO of his father's company in the future.