Not much to say about this, it’s just an anthropomorphic rat.

This drawing of The Joker is based on one of Bruce Timm’s designs for Warner Brother’s Batman the Animated Series

The Joker was created by Bill Finger, Bob Kane, and Jerry Robinson. He first appeared in issue one of Batman on April 25, 1940.

This is either an advert from a robot manufacturer or part of a blueprint style document.

Another Sci-Fi Helmet design.