Mr. Happy

Mr. Happy is the 3rd book in the Mr. Men series by Roger Hargreaves.

The character of Mr. Happy is perhaps the most simple looking, being merely a bright yellow circle with a wide smile, similar to the iconic smiley face. He is numbered as one, although was originally placed tenth. He is from Happyland.

In the Mr. Men show, He got happy and he was jumping around with excitement when mr tickle touched him. And it appeared in the Mr. Men show theme song.