Board Thread:Sonic Boom/@comment-6518289-20150829114733/@comment-679780-20150829185132

JokerJay779 wrote: Because Mystic Dave has no friends. So he had to bribe Lady Walrus. That is likely yes, but that doesn't explain how well they know each other and why they would go through all that for the couch.

They could of at least had Dave go with the tree-spy but I suppose that friendship was considered unbeleafable by the writers.