I didn't have any as a kid but I remember playing with my cousin's baby Backstroke in the tub when I visited. I actually just found Baby Splasher at a flea marke! I have a handful of the babies and the first set of adults. I wish the second set wasn't so expensive. I want to do a scene eventually with them.
I just watched the TV series and it seems like the adults disappeared from the episodes too leaving just the babies.
I really like the Sparkle and Watercolor babies.