[@Ryougu]
I'd prefer to make something new. I have it in mind somewhat, so if you want to add Marlene into the important character's tab (Or a new deceased tab and have Hiro in a reality where that Ursaring actually did it's thing... Perhaps he runs into Dewpider and it leads him back, but it's too late and the Ursaring already did the deed.) it's up to you.