Tales of the Legion of Super-Heroes in Part 1: "The War Between the Substitute Heroes and the Legionnaires" and Part 2: "The Duel of the Legions!"
*While the Legion is called into space, the Legion of Substitute Heroes deals with a mining machine meant to strip the Earth of its rare ores. However, instead of being grateful upon their return, the Legionnaires direct the Substitutes to disband, then attack them when they do not comply.
The Substitutes correctly deduce that the Legionnaires are actually alien imposters who have imprisoned the real Legion and taken their places. They expose the aliens and free the real Legion, without the latter's knowledge, the Substitutes choosing to continue operating secretly. *Source: The Official Legion of Super-Heroes Index #2 - Published by ICG.
Superbaby in "Smallville's War Against Superbaby!"
A tale of Superboy when he was Superbaby. Superbaby gets green cake frosting on his face and flies around on a cake pan, a Samllville science-fiction fan thinks he is part of an alien invasion.
An untitled Casey the Cop strip.