JLA (1996) #91
"Extinction Part 1: The Coming" is written by Dennis O'Neil and drawn by Tan Eng Huat. Humanity's centuries of indifference to the plight of the rest of the animal kingdom comes back to haunt us in big fashion as the Justice League encounters a powerful dimensional traveler seeking a rare silver masked monkey. Our story begins as the comically pliant Plastic Man is alarmed by a torrent of meteors that puncture the Watchtower's outer walls while he is on monitor duty. Plugging the air and pressure leaks with his own amazing body, Plas calls on the rest of the JLA to come on the double quick.
When Superman, Atom, Wonder Woman and Green Lantern arrive they discover a spaceship has punched a hole through the space-time continuum just above the Moon's surface; an event which triggered the meteor swarm. Although initially attacked when they investigate, the JLA enter the vehicle in a spirit of peace and question its shapeshifting pilot. Introducing himself as Pe-Pey, the alien tells our heroes he is visiting Earth to check up on the progress of one of its species the silver masked monkey. Superman and GL fly the pilot to the South American rainforest where such a simian can be found. But unfortunately, they are just in time to see one of the monkeys get killed by a crew clearing jungle for farmland. That doesn't sit well with Pe-Pey in the least whose next transformation is the most terrifying of all.