Batman and Superman Adventures: World's Finest (December 1997) is an adaptation of the 3-part episode of the same name. The adaptation is mostly faithful to the animated version. An additional scene shows Batman discussing with Alfred his problem with Superman (his tendency to rush in without thinking). The story was written by Paul Dini, with penciling by Joe Staton, and inks by Terry Beatty.
In Superman Adventures Special: Superman vs Lobo: Misery in Space (February 1998), Superman inhales a poison unleashed by some terrorists and leaves Earth to trace a radiation source that should cure him (though not lethal to Superman, the poison makes him a danger to the rest of Earth). Lobo is pointed to an artifact called the Nirvana Crystal, which emits the radiation source Superman requires. The two team up (not with the best of results) and head to the Maracot System.
The owner of the crystal, Squeed, is determined to launch it into the sun to cleanse the universe of evil (as his wife was killed in an accident, but he assumes it to be an evil act). Superman, much to Lobo's dismay, has to destroy the crystal to keep it from going into the sun. The energy from the destruction of the crystal results in Superman's ailment being cured. He leaves to go back to Earth before the council of Maracot can repay him and Lobo with their treasury. Lobo claims he will give Superman his share of the reward and the issue ends with him asking, "Would I lie?" The story was written by David Michelinie, with art by John Delaney and Mike Manley.