The idea is that when you enter the ancient world, it turns out the real obscrus has been secretly doing some research there. He lets you pick between some pokemon to keep: Treeko, squirtle or fuecoco. He explains that the ancient world is a glitch in reality and that time and space does not affect it. He also that therefore, certain pokemon would appear differently in the ancient world when they evolve as the ancient world reveals their ancient versions. Fuecoco, treeko and squirtle are some of those pokemon. I am working on giving their evolutions paradox forms. Blastoise will become Vile Shell (fighting water) Sceptile will become Psychotic branches (psychic grass)