Most of Walter's backstory that wasn't described ingame was described here-->
http://holy-assumption.insanejournal.com/1007.html#cutid1 (It'll be un-privated in a moment, or reposted~) And I'll have something about the doll today put up.
Um. All the Videos will probably be of deaths, but I'll try to find one where there isn't death. XD; Preferably with all that pretains to walter. AND THERE WILL BE SPOILERS IN BOTH WALTER'S AND SCHRO'S. (Warnings all around.)
And now, to the scenes~
( Cut for violence. D: )Schroedinger's are here, OVA IV (No other ones are realesed. D:!) I'll probably put up the manga pages that I have downloaded up here soon. ^^ Be patient~.
( Schro's~ )As I've said before, I'm planning on uploading the rest of Schro's appearances/memories from the manga, up until his.
( spoiler ) :} Sadly, I have nothing on his background, like Walter. :| But, they'll be interacting. (Schro will without a doubt, Walter'll be more quiet. :D;)
EDIT: The link to where the pictures are in Schro's comment to this entry~. Thanks~ and they're uploaded~