The Bog Beast was, fairly obviously, Atlas' version of Man-Thing / Swamp Thing / Marvin The Dead Thing etc etc etc. and appeared in a couple of issues of colour horror book Tales Of Evil and b/w mag Weird Tales Of The Macabre.
Apart from being saddled with an deeply unfortunate name for this side of the pond ( 'Bog' being slang for lavatory / toilet over here ) and in fact looking not unlike a giant walking turd, I thought this particular generic monster had a glimmer of promise.
The set-up is mildly unusual, for instance. This time, the hideous creature is actually a scientist from a subterranean society, come up to the surface to study us humans. Of course, The Bog Beast can't speak english and so can't make himself understood, leading to him being perceived as, well, you know the rest.
Apart from Jack Sparling on the first episode, it was drawn by Axa / Modesty Blaise's Enrique Badia Romero, so looked great, even if the stories don't make a vast amount of sense.
Here's Enrique's first story, along with the unpublished piece that would've appeared in Tales Of Evil #4, but that eventually turned up in an Australian reprint. Like I say, The Bog Beast was going places in my opinion, even if it was only back underground.