The girl having gone, you decide to transform other people so you won't be so lonely, a 25 foot tall super muscular lizard. You lumber through the trees, looking for people, but don't appear to find any. Suddenly, you hear voices. Turning you gigantic head, you spy two hikers standing on a path nearby. Grinning wickedly, you lumber over. They turn and see you and do what any normal person would do in this kind of situation: They scream and run. But you lumber over quickly and pull down an nearby power line. You tie up one hiker with it and pick up the other in your massive claws.
He squirms in your hands. You lift his mouth to your gigantic one, with long yellow fangs. You huff up your gigantic belly and blow pure bulk gas right down his throat. Instantly his feet swell to trash can lid size, shredding his shoes and revealing two gigantic cat-like paws covered in glossy black fur. He squirms some more. You blow into him again. His pants and underwear shred in fraction of a second. He thighs and ankles bulge with muscle and black fur, becoming as thick as trees. His ass swells to the size of a Volkswagen. You blow more and more. His abs and pecks bloat with farting noises to the size of a car and his shirt pushes out and rips. You blow again and his biceps and forearms bloat to a humongous size and his hands explode into gigantic paws as his entire body is covered in a tidal wave of glossy black fur. You blow a particularly long stream of gas and his neck bloats with muscle, shredding his shirt collar. It extends rapidly and his face pops into a long cat muzzle with fangs and whiskers. His head swells to a gigantic size to match his body. You blow one more time and huge, thick panther tail bursts from his gigantic ass with a loud farting noise. You blow again and again as he grows bigger and bigger. You finally stop. Now the panther monster is eye level with you. With a roar, he snatches up his friend and blows bulk gas into him.
The other hiker's stomach bloats out immediately. His abs and pecs bloat gigantically. His shirt shreds in an instant under the bulging muscles. His skin all over his body turns leathery gray . The panther blows again. The hiker's thighs and feet bloat and grow gigantic, becoming very round with thick nails on the front. His ass swells with a loud gassy noise as his pants and underwear split at the seams and a huge, ropey tail bursts from his spine with a tuft of hair on the end. The panther blows again. The hiker's biceps and forearms bloat huge and his fingers fatten and become clumsy. His face pops out and he sneezes a trumpeting sneeze. His nose pulls away from his face and he grows a huge elephant's trunk. It slaps against his huge pecs with a loud noise. His ears pop into map-size flaps of gray, leathery skin. The panther blows more and more as the elephant monster grows bigger and bigger. Soon, he is the same size as you and the panther.
You roar into the air, the panther growls and the elephant trumpets. Together, you three lumber off to look for more people to "bulk up"