Cannonball) was the new External they had been seeking. Gideon mentored Sunspot for a short while, until it was discovered that not Sunspot but his New Mutants teammate and best friend, Samuel Guthrie (a.k.a. He then brutally tortured them to discover their agenda and to vent his frustration over their impetuousness. When the young superheroes known as the New Warriors broke into his home while he was taking a bath in his Jacuzzi, Gideon defeated them in an impromptu skirmish with their combined abilities.

Gideon then publicly declared Cable and X-Force to be criminals. Gideon and Sunspot were later held captive by Arianna Jankos, Black Tom Cassidy, and Juggernaut. He took the young boy in under his wing and began to mentor him. Gideon had his servant Eve poison Roberto's father Emmanuel, and Gideon approached the boy, telling him he needed to take over his family's business. Gideon had known Roberto from a young age, having business relations with his father, a wealthy Brazilian businessman. At the end of the 20th century, the group began seeking out their newest member, whom Gideon erroneously believed to be Roberto da Costa, a young mutant who had joined the New Mutants, the junior division of the X-Men, and taken the codename Sunspot. He became the owner and CEO of Ophrah Industries in Denver, Colorado. He also encountered and allied himself with several other Externals.

Over several centuries, Gideon was able to amass a vast personal wealth. He awoke a few hours later, discovering his immortality. On one journey, he succumbed to scurvy and was buried when the ship reached land. Before Gideon's mutant powers emerged, he was a sailor with the Spanish armada sailing for the Americas several hundred years ago.

Gideon adeko