Doom-Z Zero – Drastia
Full art:

Description:

“The leader of “Doom-Z”: The Special Assault Squadron
-A relentless general, who actually is just a combat maniac
-He won’t forgive his younger brother, who betrayed the squadron”

Trigger happy!!

Hour hand and minute hand pendants:

Doom-Z and mass-produced machines:

(note: The mass-produced machines were briefly mentioned in a recent V-JUMP article on the theme)

Lightning rod mode:

Core:

“A core in which a key is inserted in order to trigger [the mechanism]”

Triggering:

“While triggering, the outer part of the core opens slightly (so that the pendant can be inserted more easily)”

Nation logo (left) and Doom-Z logo (right):

Mechanical dragon soldiers:

Doom-Z Five – Elara & Amalthe
Full art:

Amalthe:
Back view:

[Unfortunately this one is too faint to read]

Elara:
Gets angry very quickly:

Tail:

Top: “The form those idiots (newbies) are using is not cute at all. Rejected”
Bottom: “Base of the tail (user’s preference)”

Source.