Jeff realized he knows those people, in fact he was affiliated with them. In fact he was supposed to meet up with them, but first he must get up properly.
On his way to the bathroom he noticed himself more hopping than walking. Looking down he noticed his lower body was furred with his feet being unusually long and ending in four clawed toes the middle 2 of which seem to have grown together. Having no tail, hopping was a bit hard. He also noticed that his marsupial member was clearly peeking through his sheath. Seeing it he shrugged and mumbled, "Might as well" and sat down on the toilet starting to rub it. His bum was enormous yet muscular, like a kangaroo. Quickly he started to pant and ejaculate into the toilet paper he previously got with his other hand. As he was relaxing his thighs and bum started to deflate as the fur started to recede. After about half an hour nobody would have guessed that he was anything other than a normal human. He then took a shower and brushed his teeth before getting dressed. He quckly put his laptop and the Chronivac into his back pack and rushed outside.
He boarded a bus. None of the people seemed to have changed, but his mind was telling him that some gained an ability to shape shift between several alternative forms. Some of those people have decided to use their powers for good, or at least weird, and he was one of those. However nobody knew how or why that change happened... except for him.
He exited the bus in an industrial area with a few semi abandoned buildings. Those buildings had enough traffic for people to just blend in, but here and there there were basements nobody knew where they belonged to, as well as underground tunnels built in different times, long ignored and then forgotten. One of these was his goal.
In one of those basement corridors he unlocked a door and entered what appeared to be a long disused toilet. He entered one of the stalls and touched some tiles in a well thought out order. A click was audible in another stall. Then he left it and entered another one labeled "maintenance". It had a mop, a sink and a cabinet in it. Pushing against the back wall of it revealed that it could slide back. He pushed it back enough to reveal an entrance to another corridor. He carefully closed the cabinet behind him and made sure it would look inconspicuous again. In the dark he fumbled to another door which he also unlocked with a key got in and turned on the light.
This was his changing room. In order to preserve their identities, each one of them had their own changing room. Ideally none of them should know each others normal identity, so none of them could blabber out anything. In this room there was a small cabinet, a mirror and a chair. It had two doors, one that he just came in, the other one he will exit later.
Quickly he undressed, putting his clothes into the cabinet. Then it was time for him to change. He knew he had two other forms appart from his human one, and he was aiming for his kangaroo one. Changing felt like a simple process, but he wasn't quite as fast as his colleagues he previously saw on the TV.
At first fur started to grow all over his body. His nose and mouth pushed forward growing to an inhuman size. His ears also grew a lot, became furred and pointy at the ends. His feet became much longer and the middle toes combined into one. At the same time his thighs and bum ballooned in size. His spine extended into a thick and long tail.
For a moment he looked like a nude anthropomorphic kangaroo. Like many of his kind clothes were part of his form. Within seconds a viscous liquid started to form on top of his form. Gradually it formed a pair of leather shorts around his groin with a large hole for his tail. Over time a belt and pockets appeared. At his back hump started to appear, covering almost all of the space between his shoulder blades down to his belly. As it solidifies patches of it started to appear on his sides, quickly changing into vents. Around all of that a leather jacket formed on top of his fur. On the hump a little dome grew. It's tip split into two parts going of perpendicularly and getting rather long. Gradually those formed blades, powered by an engine apparently embedded in the torso of the kangaroo and covered by brown metallic metal. On his tail a smaller tail rotor grew. Then the changes went up his head where a baseball cap grew on top of his head fur. Near the base of his ears larger blobs appeared, gradually turning into a sort of headset.
After what was just a few minutes Jeff was now a mix of a kangaroo and a helicopter. Able to fly at any moment. In this form he was known as Skip to his friends who were waiting behind the other door.