Máttugr Helson was born and raised in Helheim, eventually being appointed as the keeper of the Bridge of the Damned, ensuring that all entities crossing the bridge are dead.
When Atreus falls ill after the fight against Magni and Modi, Kratos rushes Atreus to Freya for help. She states that Atreus' "true nature" (as a god) is fighting within him. She instructs Kratos that she needs a rare ingredient that can only be found in Helheim, and that ingredient is The Bridge Keeper's heart.
Kratos must then traverse through the Realm of the Dead in order to find and defeat Máttugr Helson to obtain the heart and save his son.
After a fierce battle, the son of Hel was disarmed and impaled by Kratos' fiery weapons, which where subsequently used to remove the Hell Troll's heart, leaving his now heartless corpse laying at the entrance of the bridge.
- His name literally translates into "Mighty Son of Hel".
- He is the only non-elemental Troll encountered in the game. However, since the totem that empowers him embodies the essence of Helheim, the realm of ice and cold, he could be considered a Frost Troll.