About the Bunny in SQ4, according to
Space Quest.net which I helped typo-edit for Frans, outside the US, the Energizer Bunny is owned by Duracell. I'm pretty sure what the site says, but I'm not 100% sure as I haven't checked that section in a while. As to the Children's Museum and the rights to SQ, I'd known that the rights to Space Quest were owned by them ever since I saw something at the bottom of
Roger Wilco's Virtual Broomcloset and I'd always wondered why it wasn't owned by Sierra. Now, if I've read the posts on this correctly, VU can sue people for using Roger Wilco in fan games? If this is true, I'm surprised they haven't done anything about the completed fan projects out there that have him in the game.