can anyone give me Jon Walker details?

Like, specifically, what was he doing in 2004 or whenever it was that Pete came to listen to Panic! for the first time? Was he in 504plan then?

Also:

There were people, too, with elaborate masks and delicately sculpted fingers and Brendon reached out to touch a girl, settled on a saddle, her knee hooked around the pommel and her toe outstretched, her neck tilted so elegantly he swore he could see her pulse point thump.

“Hi,” someone said, and Brendon snatched his hand back and spun around.

“Is that. Is that Gerard Way?” Ryan whispered, and Brendon nodded, because that was totally Gerard Way, long dark hair and round face and elastic smile. There was a thin paintbrush tucked over his left ear, a streak of black along his jaw, and his fingers were red at the tips, smearing over the front of his shirt as he wiped his hands and walked towards them.

“Welcome to the Hall of Destination. You’re.” His eyes widened. “Oh, wow. You’re you.”

“We’re us,” Brendon said, rocking back on his heels. Agreeable seemed to be the way to go for the moment.

“Cool,” Gerard said, and his eyes crinkled up at the corners, happy.