This one is actually not on the checklist card. Instead, there is an "Olaf." I do not have any card that says Olaf. Additionally, Minnow has "LDD Set 6" on it, so it's obviously meant to be part of this set. So, I don't know if an "Olaf" card was ever actually made, if it was possibly part of a different set and the checklist is just wrong, or if it was something else.

I don't have any answers to these questions. I just wanted to acknowledge that I noticed, but didn't have enough info to feel like I should mark this card as an error or a variation or something. It feels like chances are slim that many people come across this set anyway.