In episode 131, this card is shown in a flashback Jaden has when he remembers that Jesse stayed behind in the alternate dimension so that he could keep the portal open long enough for Duel Academy to return to Earth. Jaden then realizes that what happened was his fault as he was the one who sent Yubel to space, which caused the chain of events to occur up until now.
In episode 132, this card is shown in a flashback Jaden has when he notes he is positive that Jesse is alives somewhere in the dimension that he (Jaden) is in.
In episode 149, Jesse uses this card during his duel against Adrian Gecko while the former was possessed by Yubel. He summons this card via "Dimension Fusion Destruction". Jesse then activates this card's third effect to switch control of this card to Adrian. On Jesse's End Phase, this card's last effect banished "Exodius" and returned itself to Jesse's side of the field. In the next episode, "Fog King" attacks this card. Adrian then activates the third effect of "Fog King" to reduce both battling monsters' ATK to 1 during the Damage Step only. Adrian then activates the first effect of "Fog Castle" to move his monster to a different Monster Card Zone, place a Beacon Counter on "Fog Castle" and prevent "Fog King's" destruction, however he loses a Monster Card Zone. "Fog King" then destroys this card as "Fog King" negates the effects of all other monsters on the field.
In episode 153, this card appears within a series of flashbacks Jaden has when he wonders if he will have to use overwhelming force to defeat Yubel. Jaden notes he can't take more sadness, so he will have to throw away all of his pity toward Yubel and use the power of the Supreme King.
In episode 175, this card appears in a flashback Jaden and Jesse have when Jaden reminds Jesse it has been a while since they fought in a Tag Duel together.
Armityle's fourth effect was called Null-Vision Rashomon in the original and Phantom of Fury in the dub.
In the dub, it is called Chaos Phantasm Armityle and its attack is called Transmigration Wave. In the original, the attack is Henseiha (変成刃 Metamorphosis Wave). Exactly what its attack looks like is never seen since it's never shown completely. All that's seen about the appearance of its attack is that creates a giant black and lavender orb.