Lil' Angel Ghost Boy!

Gosh, I wish I knew his name. I don't, unfortunately. If only I could read Japanese....

He's from Kaidan Restaurant! You can see him in the ending credits, and he also has his own book:
http://www.doshinsha.co.jp/search/info.php?isbn=9784494011285

For now, I shall call him Pierre. EDIT! I found out his name, and it's Nekura-kun! That translates into "gloomy". D'aaaaw.