In And Then There Were None, Gwen 10 and alternate good versions of Ben came to the No Watch Timeline, courtesy of Professor Paradox, to defend No Watch Ben against the evil alternate versions of Bens who were attempting to wipe him out. In Gwen 10's reality, when the Omnitrix fell to Earth at the Yosemite National Park while Gwen, Ben and Max were camping there on the first night of their summer vacation, it was Gwen who found the Omnitrix. Unlike Ben, Gwen does not name her Omnitrix's alien forms. However, she can be ready to charge into action head-first when the circumstances call for it or when her family seems to be threatened. Gwen 10 is usually analytic about situations and mysteries if and when there is time. She tends to make sarcastic comments directed at the alternate Bens about some of their quirks or levels of intelligence while also being a very caring and courageous person who believes that family is the one thing that one should be able to count on above anything else. Gwen 10's personality is the same as her 10-year-old Prime Timeline counterpart. Gwen 10 looks exactly like her 11-year-old Prime Timeline counterpart, except that her shirt has a number 10 in the cat logo and wears the Omnitrix on her left wrist.
