The following events were published by DC Comics in the year 1997. This does not necessarily indicate that these storylines took place in the year 1997. The passage of time in the DC Universe is nebulous and subject to change and interpretation. Events from historical time periods are indexed under their corresponding years.
An armada of White Martians attack the Justice League Satellite. The team escapes, but Metamorpho is rendered inert during planetfall and is presumed dead.
Coming Out: The Teen Titans team up with Nightwing, Robin and Captain Marvel, Jr. to rescue Supergirl and Fringe from the forces of Pylon and the The Veil. The Titans learns that Fringe is a hybrid like them.
New World Order: White Martians, disguised as the heroic Hyperclan arrive on Earth and turn public opinion against the Justice League. The JLA eventually learn that this is but the first phase of a full Martian invasion. They succeed in defeating the Hyperclan and alerting Earth's populace on how to defeat the invaders using fire. In short order, the Martian invasion is repelled.
Dark Nemesis: Pylon hires Dark Nemesis to bait and capture the Teen Titans. The two teams fight in Minneapolis and the Titans are defeated. The Atom arrives, rescues them, and together they turn the tables on their foes.
The T-Jet crashes in Lost Junction, Canada. The Teen Titans are trapped by a witch and her community of cannibals. At first they steal the Titans' powers, but Prysm (along with the ghost of a Colonial settler) frees them. Note: Takes place after Teen Titans #11.
Titans: Then & Now: Haze kidnaps Omen and his father Loren Jupiter and baits the Teen Titans and the original Titans into a trap. Using his illusion-casting abilities, he manipulates the two groups into fighting one another. They soon break through the illusions, team-up and defeat Haze, but at the cost of Joto's life.