Geoffrey St. John

As a child, St. John gained his sense of duty from his father, Ian St. John, and was groomed by him to one day take his place as head of the Royal Secret Service. When Ian was killed during the Great War by the Overlanders, Geoffrey developed a strong dislike for the human species. Geoffrey is furiously loyal to the Kingdom of Acorn, especially King Maximillian and Princess Sally (who he at one point had a relationship with), but was arrogant, rude and prideful. This stems from a number of unpleasant actions on his part, including accusing Sonic of murder, declaring Armand D'Coolette a traitor, and even attempting to give orders to Knuckles the Echidna.

Geoffrey first came to Knothole and to the Knothole Freedom Fighters claiming to be a former member of the King's royal guard and acting head of the Royal Underground, the "legitamite" underground movement acting against Dr. Robotnik, dismissing the rebels as foolish children (in his own words; "Sally's Trainees" or "Rank Amateurs").

Geoffrey and his men fought alongside the Freedom Fighters on many occasions, and St. John aided in the return of King Acorn and eventually re-established the King's Secret Service and, following Robotnik's death, became head of security during the reclaiming of Mobotropolis. Geoffrey in particular was increasingly jealous of Sonic the Hedgehog, putting him down as a child, and as such did everything he could to put himself in the best light possible. Geoffrey and Sonic physically fought on numerous occasions, but made temporary amends in the end. Upon forming a new Secret Service team, he recovered Queen Alicia and Prince Elias, Sally's mother and brother respectively.

Upon the rise of Dr. Eggman, fall of Mobotropolis, and re-colonization of Knothole, Geoffrey witnessed Sonic being knighted, and reluctantly called Sonic "Sir" as he now surpassed him in rank, and was privately embarrassed when the Secret Service and Freedom Fighters were sent to work together on numerous occasions. Following the theft of the Sword of Acorns by Sonic, and paralyzation of King Max, Geoffrey, desperate to upstage Sonic, approached the inexperienced head-of-state; Elias, and manipulated his gullible nature to allow him to become his behind-the-scenes advisor. Using Elias as nothing more than a puppet, Geoffrey had Sonic's knighthood taken away, and as a child, confined to Knothole, and later had the Freedom Fighters forced to cease operations. During a mission into Robotropolis to retrieve the Sword, Geoffrey and his team were infected with nanoprobes that left them vulnerable to Eggman's manipulation, and went through extensive medical treatment to destroy them.

During his time of reflection of his actions, Geoffrey realized how big a pompous fool he had been, and considered resigning from the service. However, his long-time admirer Hershey the Cat convinced him otherwise, leading them to develop a relationship. Seeking a way to redeem himself, Geoffrey and Hershey journied across the world to find Elias, who had abandoned his position because of everything falling apart due to Geoffrey's advice. Geoffrey and Hershey later joined in the battle against the Xorda.

Upon Sonic's return from his year spent in space, he saved the newly-married Geoffrey and Hershey from execution by a phalanx of SWATbots under A.D.A.M.'s control. Geoffrey, because of this, finally put an end to his rivalry with Sonic, acknowledging he was a better hero than he ever could be. Geoffrey has since took up residence in New Mobotropolis after Knothole's destruction, and runs the Secret Service from the top floor of the army headquarters.

Geoffrey St. John as he first appeared