Honestly, I don't know. I know that the "impostor" was killed by the "real" Lobo. I haven't actually read JL vs. SS, or the new JLA books. Maybe somebody else here has a better handle on the Lobo situation.
While I appreciate the concept of completeness, there was a threshold of sorts hashed out for when to create Actors articles. And it's tied to bit players.
The idea is to avoid overloading the Actors lists by not creating articles for actors who only show up a handful of time and only playing incidental characters.
Alan Young is a border line case since the character form "Baby-Doll" can be argued as being important and more than a one name extra. But Buck Kartalian isn't. The is nothing important about the single character he played. Aside from him having died 2 days ago, there really doesn't seem to be anything notable about him from the POV of the Database.
Sorry if it came off like a jab. I know how hard it is to keep uploading pages since I have my own wiki site that needs updating everyday. I wish I understood have to do the pages here with the boxes but that is beyond my schooling.
When the comics come in I can give you the info and scans of the characters so that you can create there webpage here.