They were a family of super-heroes weren't they? I remember two of the youngest kids acted a lot like they came from the Power Pack group. They even had similar abilities including gravity manipulation and hand blasts.
yup there was also a guy similar to hulk would grow when he got angery and keep getting stronger
there was also a guy who had super sense sorta like DD.
There was also adam the father who had military experience and was a friend and ally of wolverine in war world 1 if I am not mistaken. He was also born in 1400 century and was industructable
They got un popular and really did not have any more comics for a long time till they made the x-men cross over in I think 2001 or maybe earlier. In the cross over they left the this demension and faded into another.