Changes

* As with other "Ally of Justice" Synchro Monsters, an "[[Ally Mind]]" can be seen embedded in the head as an eye. Ironically, it can't be used to Synchro Summon this card unless its Level is decreased, since both cards are Level 5 (in the same fashion as "[[Quickdraw Synchron]]" and "[[Junk Warrior]]").

** However, according to the ''[[Duel Terminal]]'' storyline, "Catastor" was created before "Ally Mind" – the object appearing in the artwork of "Catastor" might be a prototype or precursor to "Ally Mind". This may explain why the two monsters share the same Level.

* This card, along with "[[Brionac, Dragon of the Ice Barrier]]" and "[[Mist Wurm]]" were all short printed in ''[[Hidden Arsenal]]'', so only a maximum of 1 to 2 of each would have been found per-36-packs booster box, making them exceedingly rare.