Fictional character in the worldwide game of charades.

I didn't realize when I made a spontaneous whimsical offhand comment on a recent Instagram post it was actually the Muse tapping me on the shoulder to instigate a song. But the next morning I woke up with the first line and a rock riff going in my head and the whole thing came together pretty quickly except for the last verse I'm still struggling with. Here's what I've got in close to final form. 

I'm a fictional character in the worldwide game of charades

I'm a secret superhero riding rocket powered rollerblades

You don't need to know my name

This is all just a VR game

Played by lizards from space in an interstellar penny arcade

I'm a set of coordinates, u-r-l and an avatar, too

I've been issued demographics to distinguish me from you

I've got a built in GPS

To navigate through this mysterious mess

I could be making it up but on the other hand it might be true

I'm your ultimate lifeline, it's crunch time you'd better think fast.

There's no such thing as the future or the past

Don't get fooled by a sacred cow

There's only what's happening now

And when the game clock expires we won't even hear the sound of the blast

or

I'm that undiscovered rock star you encountered at a local cafe

I'm the phantom wisp of steam evaporating in the light of day

There's no such thing as the past

And the future's disappearing fast

Keep my card in your pocket- this is it, that's all I have  to say.