Forge was a teenager of the 70's, a super genuis able to build all sorts of electronic devices. Unfortunately during one of his experiments, one of his devices trapped him in another dimension he names "Middleverse". He stayed trapped there for almost thirty years until Nightcrawler stumbled onto his lab and was trapped in Middleverse himself. The other X-men were able to free both boys, and Forge returned to his family.

Even though Forge refused the offer to join the X-Men, he still helps them out from time to time and also continues with his science experiments.