Studio Massa is a Dutch Youtube channel that is owned by a unknown male artist.
Studio Massa uploads mostly Gmods, animations and Youtube Poops from Dutch cartoons and Belgium childrenshows like Samson & Gert, Kabouter Plop and Suske & Wiske.
On this channel the more longer videos and poops are uploaded.
His second channel is Massa Archief where he uploads the most of his content. This is mostly his animation content.
A famous animated series is: Geschiedenis voor idioten (history for idiots). These are short animations about mostly the Dutch history. Sometimes other countries play a role as well. A recurring character in the series is William the Silent of the Netherlands.