Gabriel's egg was laid in the Wyvern Clan rookery in 988 and was due to hatch in 998. Due to the Wyvern Massacre however, Princess Katharine, the Magus, and Tom were forced to take all the rookery eggs away in 994. The next year, on September 28th 995, they took the eggs to Avalon. Because of the difference in the flow of time there, Gabriel did not hatch until 1058.

Princess Katharine, the Magus and Tom raised the "Eggs" as their children and Gabriel grew up on Avalon, with his rookery brothers and sisters, in peace and isolation from the world. Eventually, he emerged as the natural leader of the Clan. He chose Angela, his sister and close friend, to be his second-in-command. By 1995, he had become romantically involved with Ophelia.

When the Archmage attacked Avalon in 1995, Gabriel boldly took part in the defence of the island against him and his allies (including his rookery mother Demona). When Oberon returned to Avalon in 1996, he chose Gabriel along with Goliath and Angela to fight him for the right to live on the island. Ultimately, the gargoyles were defeated, but after Tom subdued Oberon but refused to kill him, Gabriel and his clan were granted their request to stay on the Island and became Avalon's Honor Guards.

After Angela left the Clan, Gabriel appointed his mate, Ophelia, to be his new second-in-command. He is still living on Avalon with the other gargoyles there.

Gabriel's biological parents are Othello and Desdemona, though this matters to no one. Gabriel is a strong gargoyle possessing traits from both his biological parents.