Vididii you can make the Lore bigger at least:
Lore“Giants are a humanoid phantasmal species which lived during the age of gods-
After the Age of Gods ended, the majority of the Phantasmal Species went to the Reverse Side of the World. However giants weren't able to access to the Reverse Side of the World because the Reverse Side only allows spiritual bodies or souls there - giants are bound to their flesh so they can't get in. The giant race would dwindle around the world, though the remaining giant race would linger in Britain as the mystery was relatively high. By the time of King Arthur era, the giants were extinct.”
-An Excerpt from official Academic Records of the Clock Tower
While there is leagues more listed about beings under the umbrella term of “giant”, in the clock tower records, this is notably the only section where there is any semblance of error- not a great one, but merely a discrepancy when the Old English was translated. Instead, a more truthful reading of the last sentence listed above would be: “By the end of King Arthur’s era, the giants were extinct.”
When King Arthur, or rather, Artoria, was born, there were approximately 100 giants left in Britain. By the hand of a man born but a year before her, there would be none left when her reign was over.
Jack was born the son of a Cornish farmer, sharp of mind, and freakishly strong. Around the age of 16 however, A giant known as Cormoran began to terrorize their fields, and the fields of their neighbors, eating them and livestock. Jack saw the problem, and one night, dug a massive pitfall trap big enough to ensnare the giant, before leaping in, and killing him with the pickaxe he had used to dig the hole. He earned the nickname, “Jack the Giant Slayer” from this, and even got his first sword to mark the occasion.
However, this moniker would mark him, as another giant, Blunderbore, would come and entrap Jack with a magical spell, ascending a certain beanstalk to his enchanted castle, where he and his brother planned to cook and eat Jack. Jack however, would escape from their clutches, and end up killing them by strangling them with chains they had in their castle, before stabbing them to death. He freed the maidens that it turned out were being held captive there, and returned home to Cornwall, but by the time he was a grown man, leaving home, his path was set in stone: polish off the rest of the colossal bastards.
For the next decade or so, Jack would wander about Britain, tracking down and killing giants, one after another. He’d drop the heads off at the gate of Camelot as proof of death, and while the regime appreciated the service… you can’t just drop off giant bloody heads outside the perfect city and not be seen as a crazed maniac. It wasn’t until a chance meeting with Arthur’s child, Mordred, that he would gain any positive recognition from the King. Having traveled down to Wales to kill a two headed giant (tricking it into cutting its stomach open), Jack would meet the prince outside the Castle, they having been dispatched to take it on. Conversing with Mordred while bagging the heads, he agreed to become the Prince’s retainer for the time, the pair joining together to go cut down a few of Mordred’s own. They cut down a few together, but Mordred still didn’t appreciate the aspect of stealth in the equation, so Jack would take him to secretly stay the night in a three-headed giant’s castle. In the morning, the giant, old and wise, much less ravenous than his contemporaries, would actually reason with Jack when he revealed himself, and gifted him three tools in exchange for his life: boots of swiftness, a cap of knowledge, and cloak of invisibility.
The pair would then turn their voyage back towards Camelot, but not before one more encounter: a woman bewitched by Lucifer himself. Back in the mortal plane once more, Jack, through surprising him with his monstrous physical abilities, and the new tools he had acquired, beheaded the devil, sending him back to Hell. He’d then return with Mordred to Camelot, where he became Sir Jack, knighted by the King, taking a position in the line of succession for Mordred’s seat at the inner table.
Jack would continue his quest to rid Britain of its giants- at one point, running a gauntlet through them as they built a massive lair beneath the earth, slaying the mighty two headed Thunderel who came to ambush him after his exit. He would slowly whittle down the rest of them, until there was only one left: Galligantus, the largest giant of them all. Most were ranging from 10-20 meters in height, but he was double that, at 40. Galligantus was a malicious old creature, allying himself with sorcerers to create an enchanted castle, where he lurked, hidden, with a legion of nights and ladies he had captured kept there. One of the ladies was a Duke’s daughter, her father beseeching Jack to go find and save her. He did, but for all he looked, he was no mage- he couldn’t break through the enchantment to find the thing. It was only when he came across a strange old man, missing an eye, and asked him if he by chance knew anything, did he finally learn the location of Galligantus. Traveling into the castle, Jack would find the captured knights and ladies turned into animals- but when he engaged Galligantus and his sorcerers head on, he cut the giant’s head clear off, depowering the ritual keeping everyone transformed. While the sorcerers fled, he would bring all the captives to the safety of the Duke.
After being pressured into a whirlwind marriage to his daughter (and subsequent hurricane divorce, as he forgot her name on the evening of their wedding day) Jack returned to wander Britain for the next few years. He would occasionally aid other knights, hunt magical beasts, but his life’s work so far, the extinction of giants… it was over. He didn’t slide into a depression or lack of practice or anything, but… he felt lost.
It was around this time that the fall of Camelot began. Jack was largely disconnected from the politics of the round, and thus was not part of the forces of either side. He did hear however, that the prince he had worked aside, Mordred, was the one challenging the King’s throne. In a worryingly nonchalant fashion, he decided, “Well that’s a shit plan, you’ll destroy the country- I’d better go talk to the lad, see if I can help him salvage it.” And headed to Camlann.
While he got past the blockade on account of his collection of tools, and freakish physicality, by the time he got to the battlefield… it was over. There was nothing he could do. He’d spend the rest of his days in his estate, acting as a warden in the surrounding area against the chaos that had been unleashed by the fall of Camelot, passing away peacefully in his sleep from old age.
However, something odd had occurred when he died. Jack had not entered the throne of heroes as most of the others in Arthurian England did. His spirit went elsewhere- the Reverse Side of the world. As it had turned out, during the fall of Camelot, the freshly-ensnared Merlin had tried to aid Artoria. Unable to exit the Reverse Side, blocked by the enchantments of Morgan LeFay, he attempted to engineer a spell that would transport all still trying to aid The King to her side at Camlann- he would transport them through the Reverse Side to protect her, almost like a Reverse-Avalon. But as it was a last-ditch effort, and he was caught unawares, the spell faltered, only reaching the borders of the battlefield, where one former member of The Round, and two candidates had made it. It would trace their souls, and when they finally passed, instead of ascending to the throne, their Spirit Origins would then travel to The Reverse Side, to a Grove prepared by Merlin for their transport, settling into a coffin of glass and gold.
There, Jack and the two others sleep, their forms as servants resting, and forgotten- Merlin assuming his spell had failed completely. Only if Merlin himself were to leave, and/or his tower to fall, would they awaken, released from their coffin cocoons as servants.