Digimon Hyper Colosseum contains Backstorys of Boosters that show a little of the history of the Digimon who participate in them. There are many Boosters that I would find interesting to know, such as the Advent of the Seven Great Demon Lords, The Space-time Crossing Adventurer, The Indestructible Ultimate War God, The Dark Demon Dragon of the Apocalypse and the Advent Starter Pack of the Three Great Angels. But I never found Booster images to try to translate, V-Jumps of the day also have Backstorys, but I never found them. It's a shame, at least I found two Backstories (Booster 13 and Booster 14) and I managed to translate for you.
- Booster 13: The Sky-Conquering Armored Lancer
Digimon Researchers simulated the ecological evolutionary process of the Digimon and completed an artificial life form known as "ARMS" (ARtificial MonsterS). Although not intended, it is similar to Digimon. ARMS has great power and was developed as the first "Digital Biological Weapon" (ÒÇîÒâçÒé©Òé┐Òâ½þöƒõ¢ôÕàÁÕÖ¿ÒÇì) of mankind. So people have somehow seen a "miracle". The Holy Knight Digimon with the role of protecting the Netw, and the first Biological Weapon created by humanity, "ZERO-ARMS", began to feel each other's feelings. The two Living Digital Organisms guided by the intention of good, arose in the sky like a proud knight riding a flying horse, facing the great evil that threatened the peace. And the power of the Tamer, will guide their evolution in an unexpected evolution.
- Boster 14: The Radiant Crimson Knight of Heavenly Wings ´¢× (CRIMSON HYLANDER)´¢×.
This was a miracle caused by humans and the digital lifeform. The fellings of the "Holy Knight" Dukemon and the "ZERO-ARMS" Grani. It was a unique human who mediated, the power of the spirit of a Digimon Tamer. The flying horse Grani transformed his form into burning armor, and Dukemon integrated the data of Grani into himself. It was the birth of the Ultimate Crimson Knight wearing shining wings. Once again, the crisis of the collapse of the world was prevented by the divine lance of light (Gungnir) and the divine sword of light (Blutgang). And that is the beginning of the new era of super fusions brought by the new evolution of the power of the human spirit.
Well, considering that the next Storyline is the Digimon Frontier, I think that makes sense of that description at the end.