Yes, hobo, you're right. The image oddguy posted is a Meetle.
To actually prevent this small quarter being considered a picture request, I'll actually explain what these creatures are.
Chroniclers are the accountants, stock brokers, lawyers and thieves of Oddworld - basically its beaurocratic population. Trust me, they do have their place in a technocratic society.
They're actually chasing down Maggie (not literally) because of the vast quantities of money she owes them that are a direct consequence of the destruction of RuptureFarms, and subsequent disasters the Magog Cartel has incurred.
Mugs are carnivorous adult Meetles - essentially what you end up with when you feed a Grub meat. The Magog Cartel uses these fierce creatures as a kind of security/army force, and as you can see, they kit them up in tank-like gear. Magog Motors was to have been surrounded by them.