This is the last saga of the Mythos.

The idea is that Missingno. tempted Dome on the path of evil and granted him a terrible form and great power. When Old Amber found out both great powers fought for Dome's future and his divinity. However, Missingno. being one of the primal forces of Kanto, and related to the great Old Ones (programmers) was too powerful for Old Amber to defeat. Thus, Old Amber used his powers to seal Missingno within himself in the form of Old Amber (item) hoping they will cross the bounds of time where Missingno has no power. The Old Amber suspiciously looks like the Firestone and is intentional. The idea is to bring together the Missingno/Evolve Flareon without a Fire Stone idea. Fire Stones have some connection with Dome and Missingno. There is also a connection between the revival of fossils in Cinnabar and the possible encounter of Missingno. there as well.

Old Amber's light form has a strange resemblance to Charizard and also one has to consider their typing Fire/Flying and Rock/Flying. While Abby is the chosen of Helix, his connection with Old Amber could be a coincidence or is unknown. Missingno's coloring and form is reminiscent of the Haunter line, and is connected to the Pokemon tower/ Ghost Sprite which cannot be captured by any means except glitches which Missingno. is part of. Also it is to call forth the idea that before the battle with Lance one must defeat Agatha. Lance has an Aerodactyl and Agantha Haunter/Gengar. Haunter also gave a lot of trouble to TTP at the tower.

As for Helix and Dome, they grew up and became Gods themselves. It is anticipated by Old Amber that one of them will surpass even his powers and will be strong enough to reach Indigo Plateau and achieve true immortality AKA the hall of fame in which even the PC recognize.

Realizing he could not defeat Missingno. Old Amber took it upon himself to seal it within himself so he could do no harm.