I was reading a post that Malte put up and it kind of made me want to talk about these two and my theory on exactly who they are, where they come from and what happened to them.
Now, we only know them from LBT 6: The Secret of Saurus Rock. After all that, they just seemed to disappear without even a goodbye. Apparently, they also appeared without a hello. They just mysteriously entered and exited with this whole thing.
Now, seeing as how they basically look nothing like Cera, I'm going to say that Dinah and Dana are definately someone else's children. As for whose, I have now come to the theory that it is someone Topsy is actually good friends with. Such good friends, that he's like family. (That was the result of my older brother and one of his friends.)
However, this gives me a concern about things. If he is good friends with the parents, why is Topsy seen as a grandpa by Dinah and Dana and not something like an uncle. In fact, why is Cera seen as an aunt to those two? Maybe he's good friends with the parent's parents. Then again, if that were the case, I highly question Topsy's age.

: (Is he really old enough to be a grandpa?)
I'm just not sure how my theory really works on this one. Just know that in the end, I think that Topsy is good friends with the parents of Dinah and Dana and offered to look after them for a bit. I really don't want to go into so many questions right now.

What do you guys think?
