Since the bottom of the chasm wasn't too far from where Grimmel had fallen from, he survived the fall. However, the dragon poacher would soon come to wish he had perished in his plummet, as the vibrations in the ground that his landing produced alerted his presence to the other revolting inhabitants of the pit, for as Grimmel watched in sheer dread, numerous dog-sized Weta-rexes scuttled towards his position!
A drained Grimmel took a dagger in each hand, and as the first of the enlarged insects lunged at him, he plunged both blades into the bug's abdomen! Since the wounded predator was still flailing in pain, Grimmel finally drove one of his blades into its head to finish the job, only for multiple other Weta-rexes to take advantage of the distraction to jump onto their prey, crawling around the human as they looked for the tastiest parts to rip into with their inhuman pincers! Grimmel stumbled about as he tried to dislodge the marauding creatures, but despite ramming his adversaries into the chasms' walls and grabbing at them, the bugs' legs enabled them to stubbornly cling to him! Thus, Grimmel jammed his daggers into each of the arthropods' thoraxes, to the point that the blades emerged from the Weta-rexes' dorsal sides, finally causing the creatures to release their grasp on him as they succumbed to the vicious wounds.
Having had enough of the merciless insects that were continuing to advance towards him, Grimmel drew his crossbow, firing all of his remaining Deathgripper venom darts into the mob of relentless scavengers. Due to their small size (compared to the other creatures of Skull Island that Grimmel's Deathgripper venom darts had embedded into), it only took a few seconds for the venom to outright kill the disturbing arthropods! The sight of their kin falling so quickly was enough to frighten the rest of the Weta-rexes into retreating into the caves from where they came!
Just as Grimmel started gloating in relief at his fleeing adversaries, he found that he'd backed into the bubbling and filthy geothermal syrup that prevailed throughout these pits, from which arguably the most horrific denizens of Skull Island, the worm-like Carnictis, finally emerged from their disgusting black 'shells'! One of the foul creatures, just barely out of the malevolent human's eyesight, suddenly extended outwards, chomping down on Grimmel's right arm and relieving him of his crossbow! Crying out in pain, Grimmel swung his head in horror at the gruesome sight of this Carnictis rapaciously biting into his arm, to the point that the human could feel the ragged and curved rows of teeth stabbing into his very tissue! At that, Grimmel swung a dagger at the abomination's fleshy pink neck, beheading the foul creature after several swings, whose headless body flailed about for a few seconds before ultimately collapsing!
Now knowing that these freaks of nature could be killed in a relatively straightforward way, Grimmel swung his daggers like a madman, decapitating worm after worm, but the Carnictis just kept coming! Unbeknownst to the now-exhausted Grimmel, two Carnictis had retreated into their 'shells' and wriggled behind Grimmel as the human continued hacking away at their kin. Before the vile poacher could finish the job on his remaining adversaries before him, the pair of Carnictis that'd snuck behind him went on the offensive, bringing their multiple rows of inhuman teeth down onto their prey's hands, disarming the human of both his daggers! Before Grimmel could fight back, the two Carnictis then mercilessly bit into his arms, preventing the dragon-hunter from being able to resist as the remaining Carnictis finally converged on their prey! Grimmel tried kicking at the approaching scavengers, and while one of these desperate attacks caused one of the Carnictis to temporarily back off, the other kick was intercepted by another of the abhorrent worms, who took the opportunity to seize the outstretched limb in its horrific jaws, with another of its brethren doing likewise shortly after!
Seconds later, Grimmel found himself completely immobilized, unable to escape as the Carnictis holding his limbs began chewing down on them, stabbing into the human's pale skin. As this was happening, Grimmel thought, I was cleansing this world of the bane known as dragons! I almost wiped the scourge known as the Night Fury from the face of the earth! What part of that warrants this sort of punishment?! Grimmel was forced from his thoughts as the largest of the gruesome creatures brought its faceless jaws down onto the homicidal and delusional human's head! Grimmel could only thrash his head in terror as his cranium was finally engulfed by the writhing, inhuman mouth!
With that, a good chunk of Skull Island echoed with the sounds of Grimmel's screams of horror and unadulterated agony as he was excruciatingly chewed up alive by the ravenous Carnictis, who would go one to savagely rip every last piece of digestible material from his writhing frame as they claimed yet another in a long line of victims to fall into the natural traps of the hellish landmass that was Skull Island!
Thanks for reading! As I stated in the 'summary' section of this story, I was very disappointed by the way Grimmel went out at the end of How To Train Your Dragon: The Hidden World. Given everything Grimmel did throughout the movie did that made me love to DESPISE his very being, I decided he should be put through the (physical) wringer before being given the horrific end that he's had coming ever since he revealed his genocide of the Night Furies!
As for why I chose Skull Island, specifically the version from Peter Jackson's 2005 reimagining of King Kong, the idea that the events of this story should unfold on this infamous 'lost world' came from the fact that both the 2005 version of King Kong and How To Train Your Dragon: The Hidden World are both technically Universal Pictures movies, since this film studio distributed both movies.
For all those that love to hate Grimmel the Grisly as much as I do, I hope you enjoyed this 'alternate ending', and feel free to leave your thoughts in the comments. Once again, thanks for reading!