Have you guessed it? Look at the bottom and read it to see if you are right.Also here is a description.

This character is a bodyguard to keep intruders away from Elsa's ice palace. He is voiced by Paul Briggs made in 2013. Origanlly there was going to be more than one of this character with Olaf being the first member of the army. Like Olaf he was built by Elsa's power.