Marta Kessler as Olga, a surly, take-no-prisoners gnome who doesn’t understand “feelings” and “empathy” and sidekick to Magnus Antas, aka The Mad Santa, , Liam Kyle as Gary, Isabella ...

Also headed to the North Pole this season: Mad Santa’s sidekick Olga (The Mysterious Benedict Society’s Marta Kessler), a surly, take-no-prisoners gnome who doesn’t understand “feelings ...

Additionally, The Mysterious Benedict Society‘s Marta Kessler will guest-star as Magnus’ sidekick Olga, a surly ... “Scott Calvin continues his role as Santa Claus after retirement plans ...

Additional guest stars include newcomer Marta Kessler as Olga, a surly, take-no-prisoners gnome who doesn’t understand “feelings” and “empathy” and sidekick to The Mad Santa, along with ...