Just for fun a comparison of the 2011 to the new 2014 frame.
About this creation
In the description of the recent Operation: Steam Knight Vampire I mentioned that the armour was a modification of the Black Dragon Knight automata which is a "cousin" of the Red Dragon Knight automata.
Here are some images showing the "modernised" red and black versions and how the original 2011 version might have looked in black.
The fiction remains the same, these magic animated suits of armour serve as sentries for the emperor's palace. Infused with the elements, fire/red, thunder/black, tide/blue, ice/white, lightning/yellow, earth/green.