Here are a few more of the sketches I got while at the 2010 Wizard World Philly Convention. Electron was drawn by Manny Mederos. Manny drew Electron in his SENTINELS Book 1 look, and I don't think he was wild about it. He couldn't remember it on his blog, lol. I thought it was cool though.
Timeout from the 3rd Gen SENTINELS was drawn by Kevin "Kevtoons" Greaves. I really loved Kevin's style and his digital work really makes his pen and ink shine more than you can see here. Check out his work at http://www.kevtoons.deviantart.com/.