Three hours later, and Shadow has fully joined their ranks.
Sonic sits at five feet, with seven long, hard cocks constantly drooling pre from his enormous scrotum of 25 inches. His breasts remained the same, except his third pair, which had enlarged to match the first two. His arms had lengthened as well, allowing him to grab targets from further away.
Tails stood at six feet, with four thick, veiny cocks, dripping with pre from his massive scrotum, carrying 15 10 inch testicles for extreme orgasms. His legs and tails were long and powerful, so he could grab airborne targets if he wished.
Shadow stood at four and a half feet. His balls and cocks had remained the same while the changes had focused mainly on his feminine parts. She had four rows of m-cup breasts, all capable of flooding a room with milk within three days if given time, and her clit had enlarged. It was now two inches around, and easily juts out at two inches from her body, constantly being rubbed by her balls. Inside her, her pussy had evolved to the point that one could literally stick their entire arm in with no effort at all.
They all stopped fucking each other as they turned to the hole that used to be Tails' front door. Out there they could feel other targets. Other creatures destined to become herm-beasts like them. They howled and ran out on all fours, their dicks, and in Tails' case balls, all dragging along the floor as they escaped outside and ran in separate directions.
Sonic ran in the direction of the center of New Mobotropolis. There, while hiding behind a rock, he saw his first victims. He leapt out, running at them all, and gathered them all in one long arm. After getting behind the rock again, he lifted the poor little Mobians.
He pierced them one by one with little care for their pain. One, a male cat, had his pants torn as he screamed because of one of Sonic's dicks penetrating his ass.
Another, a young rabbit girl, got her pussy penetrated and hymen torn. The poor girl had been saving herself for when her boyfriend had been ready...
A pair of siblings, both foxes, were forced head first with cocks down their throat. This was horrifying to the female of the two, as she had been born blind and had no idea of what was going on.
A young squirrel boy, clearly no more than five years old, was forced to choke on yet another member.
Another female, this one an echidna, was double penetrated by the remaining two dicks, taking one up the ass and one up the vagina.
Sonic used his long arms to fuck these poor creatures long and hard. He went full force, ruthless in his act.
Finally, he came. His seed flooded out of his members and filled each person, the echidna doubly so.
They all slid off of Sonic's dicks onto their ground and shook violently as they changed.
The men's pelvis' split open at the bottom to reveal a vagina, the women grew a penis or two each, along with a set of virile balls. The little kid got the pussy, and as a side effect got the ability to impregnate and become pregnant, even at his young age.
The new recruits all got up and fucked each other in a six-person orgy, making their dicks longer, their balls and breasts bigger, and their pussies deeper.
Sonic walked off for more prey, ignoring the wind that only seemed to pass his right side.