I've completed LBP2: Move Pack lately and I have to say Cakeling is the best villain in LittleBigPlanet 2 in my opinion!
Why? I'll explain it to you! Beware the Spoilers for Move Pack if you haven't completed it yet!

Backstory: Cakeling was an innocent cake that gone crazy because of the Brain Crane.

Appearence: Cakeling is kinda cute. Even though it's evil he is still an appealing character, which is cool.

Personality:Cakeling is a jerk to everyone and he wants his revenge which is normal... I wouldn't want to be eaten by someone. (Nerd_Dog, I'm looking at you.)

Boss fight:It was the most fun boss fight in LBP ever. Well probably you had to shoot fireflies at him and defeat him once for all. I feel bad for him i never felt like it when i defeated a boss fight... like ever! He has been eaten by sackbots!

Final Verdict: 7/10

Note: It's My opinion you may not agree with it but i wanted to tell you why i love him! He is my third favourite character after Newton and Clive!

I love to eat cake too!

But... I don't...

Hahaha, don't be worried, I'm set on a diet!

Wow, no guarantee that Nerd_Dog won't eat something, or someone... o.o
I'd actually agree with you but the main reason is...
BECAUSE KEEP SPAMMING X ON THE CAKELING NOISES! IT SOUNDS REALLY RETARDED AND FUNNY!