SMW Subobject for NormalExamine: A vengeful spirit corrupted by dark magic.Monster JSON: {"release_date":"9 May 2005","poisonous":false,"level":"150","style":"[[File:Attack-icon.png¦25px¦link=Melee]]","weakness":"[[File:Air weakness icon.png¦25px¦link=Air spells]]","assigned_by":"Not assigned","id":"2027","name":"Guthan the Infested","members":"Yes","version":"Normal","examine":"A vengeful spirit corrupted by dark magic.","lifepoints":12000,"experience":881.4,"aff_weakness":90,"release_update_post":"Barrows","aggressive":true}NPC ranged max hit: 0NPC melee affinity: 55NPC primary attack style: meleeNPC attack style: File:Attack-icon.pngNPC magic accuracy: 0NPC ranged affinity: 45NPC magic max hit: 0Weakness text: airNPC ID: 2027Release date: 9 May 2005Is NPC poisonous: falseMonster name: Guthan the InfestedNPC magic affinity: 65NPC susceptible to poison: trueVersion anchor: NormalCombat level: 150NPC susceptible to drain: trueNPC weakness affinity: 90Is variant of: Guthan the InfestedLocation restriction: surfaceIs NPC aggressive: trueNPC ranged accuracy: 0NPC attack rate: 6Slayer experience: 0NPC Attack level: 70Actions: Attack, ExamineWeakness by class: magicNPC attack style text: meleeNPC melee accuracy: 1486Susceptible to: inquisitor, undead slayerNPC life points: 12000NPC susceptible to deflect: trueNPC susceptible to stun: trueIs members only: trueNPC special max hit: 0NPC armour: 1486Weakness: File:Air weakness icon.pngNPC Magic level: 1NPC Ranged level: 1NPC melee max hit: 1260Combat experience: 881.4Slayer level: 0NPC Defence level: 70
SMW Subobject for Ritual of the MahjarratExamine: A vengeful spirit corrupted by dark magic.Monster JSON: {"release_date":"14 September 2011","poisonous":false,"level":"105","weakness":"[[File:Zero weakness icon.png¦25px¦link=No weakness]]","style":"[[File:Attack-icon.png¦25px¦link=Melee]]","assigned_by":"Not assigned","id":"14265","restriction":"quest","members":"Yes","version":"Ritual of the Mahjarrat","examine":"A vengeful spirit corrupted by dark magic.","lifepoints":3750,"experience":0,"name":"Guthan the Infested","release_update_post":"Ritual of the Mahjarrat","aggressive":true}NPC ranged max hit: 0NPC melee affinity: 40NPC primary attack style: meleeNPC attack style: File:Attack-icon.pngNPC magic accuracy: 0NPC ranged affinity: 40NPC magic max hit: 0Weakness text: nothingNPC ID: 14265Release date: 14 September 2011Is NPC poisonous: falseMonster name: Guthan the InfestedNPC magic affinity: 40NPC susceptible to poison: trueCombat level: 105Version anchor: Ritual of the MahjarratNPC susceptible to drain: trueIs variant of: Guthan the InfestedLocation restriction: surface, questIs NPC aggressive: trueNPC ranged accuracy: 0NPC attack rate: 4Slayer experience: 0NPC Attack level: 75Actions: Attack, ExamineWeakness by class: noneNPC attack style text: meleeNPC melee accuracy: 1694Susceptible to: inquisitor, undead slayerNPC life points: 3750NPC susceptible to deflect: trueNPC susceptible to stun: trueIs members only: trueNPC special max hit: 0NPC armour: 1694Weakness: File:Zero weakness icon.pngNPC Magic level: 1NPC Ranged level: 1NPC melee max hit: 600Combat experience: 0Slayer level: 0NPC Defence level: 75
SMW Subobject for Rise of the SixExamine: A vengeful spirit corrupted by dark magic.Monster JSON: {"release_date":"13 November 2013","poisonous":false,"level":"650","weakness":"[[File:Zero weakness icon.png¦25px¦link=No weakness]]","style":"[[File:Attack-icon.png¦25px¦link=Melee]]","assigned_by":"Not assigned","id":"18541, 18542","members":"Yes","version":"Rise of the Six","examine":"A vengeful spirit corrupted by dark magic.","lifepoints":50000,"experience":7149.6,"name":"Guthan the Infested","release_update_post":"Barrows - Rise of the Six","aggressive":true}NPC ranged max hit: 0NPC melee affinity: 40NPC attack style: File:Attack-icon.pngNPC magic accuracy: 0NPC ranged affinity: 40NPC magic max hit: 0Weakness text: nothingNPC ID: 18541, 18542Release date: 13 November 2013Is NPC poisonous: falseMonster name: Guthan the InfestedNPC magic affinity: 40NPC susceptible to poison: falseCombat level: 650Version anchor: Rise of the SixNPC susceptible to drain: falseIs variant of: Guthan the InfestedLocation restriction: surfaceIs NPC aggressive: trueNPC ranged accuracy: 0NPC attack rate: 5Slayer experience: 0NPC Attack level: 90Actions: Attack, ExamineWeakness by class: noneNPC attack style text: meleeNPC melee accuracy: 2458Susceptible to: undead slayerNPC life points: 50000NPC susceptible to deflect: falseNPC susceptible to stun: falseIs members only: trueNPC special max hit: 0NPC armour: 1924Weakness: File:Zero weakness icon.pngNPC Magic level: 1NPC Ranged level: 1NPC melee max hit: 1296Combat experience: 7149.6Slayer level: 0NPC Defence level: 90
Guthan and his brothers appear as bobblehead workers in Sliske's chocolate factory.
Guthan takes part in Sliske's game, where his relationship with Isolde is revealed. Sliske has Ahrim navigate a maze of "righteousness", and Guthan appears before him with his love Isolde. If Ahrim was bathed in most of the flames, Ahrim asks the two for forgiveness; if not, Ahrim kills Isolde again and Sliske wipes Guthan of the memories he had with her. He also reveals to his brothers why he had them join the crusades (though Torag was planning to sign up anyways).