Is Batman/Superman: World's Finest's Boy Thunder a character from Kingdom Come?

December 20's Batman/Superman: World's Finest #10 promises to reveal the secret identity of Boy Thunder, Superman's long-lost sidekick from another reality.Though there have been a few hints here and there as to which DC character fans have known for "decades" the Boy Thunder may actually be, the biggest clue to his identity may come from updated trade dress for World's Finest #10, which references the Bible verse Matthew 6:10, an excerpt from The Lord's Prayer."Thy will be done," reads the quot