Father Twistmas is a minor Moshi Monsters character, and the Moshi world's version of Father Christmas.
He is seen in game as a cuddly toy, which is usually sold as a mystery Twistmas gift around the holiday season, but has appeared in the form of a monster in posters and artwork. He also made a very small cameo in the Moshi Twistmas music video flying on his sleigh but was in the form of his cuddly toy.
Father Twistmas sings a small solo part in the Moshi Twistmas song where he asks the main monsters what they want for Twistmas. He also appears as a cuddly toy in the video for a split second whilst flying in his sleigh.