Black hole
From Jenny Everywhere Wiki
Black holes were all-devouring physical singularities.
A rip in the fabric of the universe created by the Cosmic Solution in Times Square in Reality Z-25 31-H was likened by Professor Madison to a “tiny black hole”. (COMIC: Epilogue to Destruction)
One origin story posited for Jenny Everywhere included a Living Black Hole. (COMIC: The Secret Origin of Jenny Everywhere)