Ok so allow me to fully explain the timeline of Orion's backstory:
He leaves Crystalia
What feels like months to him in space is actually a few weeks, then he ends up on "Triforia"
Triforia has an effect similar to that of the lotus hotel in percy jackson to Orion. The more time he spends there, talking with its people, learning their culture, the more he forgets how he got there and where he's from.
One day, one of the surviving crystalians finds her way to this planet, in search of Orion or Lyra, and the sight of her kinda snaps Orion out and the trance 'Emperor Doom' placed on him falls away, revealing how he's actually on The Cimmerian Planet, where the New United Alliance of Evil is based (more on that in the upcoming project).
In the episode, Vortanox finds him and is about to attack him then Master Green takes him into the morphing grid. What actually happened was Vortanox found him, attacked him, THEN master green showed up, neutralized vortanox, sent orion to earth and planted fake memories of him 'growing stronger' in wherever he'd gone to.