Grey's Anatomy Babies! All About Seattle Grace-Mercy West's Tiniest Residents (PHOTOS)

The first Grey’s baby we’ve known since the beginning, we met Tucker when Bailey (Chandra Wilson) gave birth to him in Season 2. And now that his father, the older Tucker, is only in part of the picture, little Tuck spends most of his days in the hospital daycare. He first got to know the hospital when George toted him around while on babysitting duty, but now, we’re willing to bet that Tuck is the designated daycare tour guide, teaching all of the other toddlers the ropes. But if his father is any indication, Tuck might not end up being such a fan of the hospital in, say, 10 years.