Torg first encounters Alt-Zoë when he is rescued by her from the Dimension of Pain during the "It's the Wrong Torg, Grommit!" storyline. Torg's stay in the Dimension of Lame was brief, during which he received several back-rubs from Alt-Zoë before Alt-Bun-bun sent him home.
Torg next encounters Alt-Zoë in the "That Which Redeems" storyline, during which he develops a romantic relationship with her. Torg is brought back to the Dimension of Lame by Alt-Bun-bun, only to discover it has been overrun by the inhabitants of the Dimension of Pain. Torg becomes Alt-Zoë's protector, promising to keep her safe .
This section gives away the ending of the storylines to "That Which Redeems II" and "bRoken". If you haven't read either of those stories, stop reading this and go read Sluggy first. This can wait.
You have been warned...
Alt-Riff later reveals that Alt-Zoë had married their dimension's version of Torg, who had subsequently died in a fission popcorn experiment. Alt-Zoë never revealed to Torg that he was a replacement for her lost husband.