I’ve never been good at drawing machinery. My solution was to go cartoony as a lampshade of my inability to draw a car.
In any case, the pathetic citizenry tend to leave their children and pets in cars during the summer, which causes them to die. Do you think that your minions and eldritch abominations are any different because of their armor and otherworldly qualities? Armor is stifling and otherworldliness just means “not used to the (deadly) qualities of this world”.