Stefán Karl voicing Klói - kókómjólk

You can read more about the brand here:

This video has a series of adverts for the chocolate milk mascot, Klói, voiced by Stefán Karl from 2012 and 2014, the first ones are made by the 3D company CAOZ for Mjólkursamsalan for their kókómjólk brand.
The ones from 2014 are flash animations made by Mjólkursamsalan, the voice actor is different for these ones but the end slogan is still by Stefán Karl.

He actually voices all the characters that appear in the adverts, aside from the duck in the first one, the original adverts were found here:

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