"They're more intelligent than most of the other things I make." Which was sort of an embarrassing set-back, he had to admit. "Right. Tyrants are... Well, they range from looking human - or almost human - to looking inexplicably tall, with green-blue skin, the exposed heart again, and giant claws. And everything you can think of between the two. They were experimental though. The mass-produced ones all look human." And one or two of them looked pretty unassuming most of the time. "They'll always have red eyes though so you can see them coming a mile away. Unless they find a way to hide it, at least." Birkin chuckled good-naturedly.