Another visit to the Mos Eisley cantina. Art by Ralph McQuarrie of course.
A simple design trick: to create a monster or alien, start off with an existing animal, then change its features around. The inspiration for image 2 for example obviously was an owl, but there’s also a rodent-like creature at the cantina, a slug, and so forth.
In the 1996 30th Anniversary film Ultraman Zearth, the villain is the Benzene Alien who takes a human form named Akuma Ogami. Akuma is played by Takeshi Kaga, probably best known as Chairman Kaga, the host of the original version of Iron Chef.