User blog comment:Rassilon of Old/Silhouetted characters on the Young Justice: Invasion poster revealed!/@comment-3118271-20120502173702/@comment-3118271-20120502203459

That's what I'm thinking. U gotta remember this is a kids show filled with  illogic

We saw  Icicle Jr  at 22 unless they r going bacl to the present. He doesn't look all that different. I mean  Junior is   human    just with ice powers. He should age fine.

Maybe that's Bart