Gwen Stacy
Gwen Stacy appears in the series finale, when Spider-Man visits a parallel universe, in which Peter Parker (Armored Spider-Man) is a wealthy industrialist similar to Iron Man. Gwen Stacy is his fiancée, and Spider-Man reflects that his alternate self is engaged to a woman he does not even know. Spider-Carnage who wants destroy every parallel reality kidnaps her, threatening to everyone present if one of them follows him, she will die first before he destroys all reality.
Spider-Man then understands that Spider-Carnage is not truly evil as he is confused because in his reality, his Uncle Ben and Aunt May have died and he is believed to be a clone to the Scarlet Spider, also known as Ben Reilly. So, Spider-Man then goes to the Uncle Ben who was alive in this reality (Since this world's Spider-Man has never failed at anything, Uncle Ben was still alive) and tells him everything about Spider-Carnage's plan. Meanwhile, Spider-Carnage tells Gwen on how he will destroy all reality. Spider-Man and Uncle Ben then arrive and Ben reforms Spider-Carnage while Spider-Man frees Gwen. Spider-Carnage prevents the destruction of all reality but unfortunately cannot remove the Carnage symbiote. Gwen then witnesses as Spider-Carnage jumps into an unbalanced portal, killing himself. Gwen was voiced by Mary Kay Bergman.
Read more about this topic: List Of Spider-Man (1994 TV Series) Characters, Other Characters