Its simple, make a narrative similar to what you see on animal documentaries, except make your narration based off one of the monsters! I’ll start
Here we see the wild Goliath in its unnatural habitat… The Goliath was once believed by the native people of Shear to be a fallen demigod, descended from Jupiter after having lain with the warmth of the sun… Truly a remarkable abomination however, the Goliath is not fully understood as to where it truly came from.
Here we see the mighty goliath feasting on a megamouth toad, the frog is usually highly venomous to other predators but due to the fact Goliath is a walking furnace it can quickly break down the toxins and nutrients needed to build armor to its skin… And evolve
A true rare sight to see! The Goliath is now powerlifting boulders, meaning it is now looking for a mate, wait… Nope it just smashed a mammoth bird with it… Hmm awkward