My own particular favourite - other than Kong himself, naturally - was what initially appeared to be a fair-sized algae-covered hillock mysteriously rising above the water surface of a huge lake but which soon revealed itself to be the humped back of a truly humungous amphibious yak-like ungulate - a veritable bovine behemoth, in fact, but which proceeded to stare impassively at an armed-and-ready Hiddleston with cud-chewing indifference. I've been (semi-)reliably informed that it is officially known as a sker buffalo.
As expected in all the best monster movies, there were the obligatory giant invertebrates (squid-octopus combo critter, spider, parasitised stick insect), mostly lurking unseen for much of their screen time but with murderous intent aplenty, and also some very weird giant flying beasts called leafwings. However, Skull Island's principal monstrous villains this time round were a grotesque two-limbed reptilian lineage known as skullcrawlers that lived underground but surfaced periodically to wreak havoc and horror upon their human victims, with the skullcrawler numero uno being a colossal monster of comparable proportions to Kong himself. Morphologically, the skullcrawlers were truly bizarre, looking something like what might be the macabre outcome if ever a gigantic tatzelworm (ask a cryptozoologist what that is) or a ginormous lindorm (ditto a dracontologist) and an immense wingless pterodactyl ever got it together - but without these latter beasts' charm!
The monsters are as varied as they are numerous - everything from a pair of bloodthirsty aerial mermaids, an Oriental mothman lookalike, and a colossal white tiger that effortlessly defies the laws of gravity when attacking our heroes, to skeletal wraiths, a pig demon, an immense Eastern dragon, and, as the film's villainess, a mercilessly evil female demon whose aerobatics, shape-shifting abilities, and chilling yet mesmerising malevolence renders the likes of Maleficent, Cruella De Vil, and Ursula the sea-witch mere toe-dippers in the deep, dark waters of evil.
Click here to check out an excellent 'La La Land' trailer. And for anyone in heartfelt reminiscing mood who wistfully sighs: "Ah, the good old films, they don't make them like that any more" - yes they do, and here's the proof.