In a secret lab a group of scientists have invented a watch that can open a portal to different realities. The portal could remain open for a few minutes but the watch needed one day, twenty-four hours to recharge. To work the watch one simply pressed a button on the side which popped the top up reveling four colored buttons underneath. The buttons were red on the upper left, blue on the upper right, yellow on the lower left, and green on the lower right. Pressing these buttons in a combination of four (making the potential number of realities the watch could take someone to 256) would open the portal to the reality stored in the watch for that specific combination. Red-red-red-red was set as the home reality. When the portal opened what looked like lightning bolts came out of crystals at the three and nine o'clock positions and meet at a point. They would then spread apart creating the portal between them and disappear when the portal was fully opened.
The scientists had sent small probes that looked like flies through the portal and then retrieve them the next day. Non-organic things could go through the portal both ways but organic things could only go one way.
Now they were ready to send a human through the portal. They theorized that a living being would be transformed to fit the reality. For example, if a portal was opened to a reality where the user was a six year old girl they would transform during the transition and be a six year old girl on the other side. They needed a volunteer though. They posted on transformation, fantasy, and occult sites asking if anyone would be interested in exploring other realities.
Out of the numerous responses they received they picked you as the first human to go through the portal. Who are you though?