David - version One.

Newborn David was a generic AA Mattel baby.

David - Version 2.

David has grown up just a little bit into a Krissy Klone (by Kid Kore). I forget the little Klone's name, but the baby's from the same company that does the Kelly Klone Jodie and Stacy Klone Katie. This version of him was introduced in episode 16.