Ambush Bug in "Black Beauty" or "A Horse is a Horse, of Course, of Course"
Written by Robert Loren Fleming, penciled by Keith Giffen & inked by Bob Oksner.
While tinkering with his Lil' Bugs, something goes wrong and Ambush Bug finds himself trapped in a strange black costume, that will not come off.
Superman in "Mr Mxyzptlk, Media Star!"
Written by E. Nelson Bridwell, penciled by Alex Saviuk & inked by Dennis Jensen.
Mister Mxyzptlk is fed up with Superman's "star" status and decides to make Morgan Edge turn him into an even greater media star.
Superman in "Jimmy Olsen--Blob!"
Written by Craig Boldman, penciled by Howard Bender & inked by Pablo Marcos.
Jimmy has just gotten a bunch of his souvenirs back from the Superman Museum and he feels great. On his way home he sees a young girl fall from a building. Immediately, he doses himself with some of the Elasti-Serum, but it changes his entire form into a mass of goo instead of just giving him elastic powers.
Cover art by Keith Giffen.