Thorvar Crittersmash is Santa Claus's Fremennik alter ego who appears in the 2010, 2014, and 2016 Christmas events.
He initially adopted the persona in the 2010 Christmas event to try and spread Christmas cheer to the Fremennik of Daemonheim. According to Thorvar, Thok did not dispute him being a Fremennik, claiming he was obviously a Fremennik as "he climbs through chimneys and into fireplaces, he is almost as strong as me".
Thorvar accepting charity donations to Oxfam
During the duration of the 2014 Christmas event, Thorvar was located at the lodestones in most major towns accepting bonds as donations for Oxfam. The rewards for this are the Oxfam present, 'the Festive' title and the Oxfam Reindeer Antlers. After the first of January, he no longer accepted Bonds, and was removed once again on 5 January 2015. Santa could be also found in his normal attire at the Lumbridge Crater at the same time.
During the 2016 Christmas event, Thorvar reprised the same role he played in the 2010 Christmas event. His scene can be played after completion of the 2007 event.
- His name is a play on "Father Christmas".