Originally posted by MF DELPH
Modern Apocalypse always has the armor. The only time he wouldn't have the armor would be prior to finding Ship or fresh out of his Rejuvenation Chamber (in some depictions). It was shown in Messiah War that all he needs to do is interface with his Celestial Tech and he can power up and form the armor (which is why Stryfe and Bishop had to to get the drop on him during one of his hibernation cycles to try and take him out). The Transmode in him is able to create it once he interfaces. It's literally part of him once he gained it. It's not typically depicted as a special suit of armor he sometimes wears like a special Ironman suit. He's always in his Celestial Armor.
Yes, I understand that Apocalypse always has armor on.
What I'm saying is that he's never until recently had cosmic Celestial Armor on. And I'm not talking about some cheap knock-off he whipped up, but armor equivalent to that of Celestials granted to him by the Host (Along with the Death Seed I'm guessing).
Armor that has him walking around as durable as a Celestial. This isn't hard to understand. There's Celestial Armor, then there's Celestial Armor. Apocalypse (Others like Stellaris) had the former in the past, now he has the latter.