Origin
Very little is known about Marrow. She presumably originated in the garden Order. At some point she became the queen of the cats who live in Order.
Creation
Marrow was created by Bill Willingham and David Petersen. She made her first appearance in House of Mystery #7.
Major Story Arcs
The War
She rules over her people and leads them in their endless war against their eternal enemy, the birds, in the garden Order.
Powers and Abilities
Marrow is a cat, and so possesses all the inherent skills and abilities of her species. She has sharp claws, and is incredibly agile. She is presumed to be a good leader and politician, as well as being a skilled hunter and combatant.